Close
Close
Narrow Results
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!







GenreAuthorFormat
Science Fiction   Remove Search Term
L   Remove Search Term
EPUB   Remove Search Term
Advanced Search

 
 Hottest Science Fiction, L, EPUB
 
 Newest Titles in This Section
Products found in this section... Sort by: 
 Title ▲   Publisher    Price  
A Change of Tactics: A Sime~Gen Novel (Clear Spring Chronicles #1)

A Change of Tactics: A Sime~Gen Novel (Clear Spring Chronicles #1)


Den Milnan, a Tecton Donor, accompanies his cousin, channel Rital Madz, to an experimental Sime Center in the town of Clear Springs, deep in hostile Gen Territory. Rital plans to offer selyn technology to the Gens in trade for selyn, the energy that only Gens can produce. Selyn is the fuel that could power a new revival of civilization, as fossil fuels did for humanity of the 19th and 20th centuries....   [click here for more]
Wildside Press  $4.99

Add to DriveThruFiction.com Order  
A MagiTech Crisis (The Descendants Basic Collection, #4)

A MagiTech Crisis (The Descendants Basic Collection, #4)


The Descendants have faced tough odds before, but they're about to face a crisis. Morganna returns with help from another world; monsters that make the Mayfield Mauler look like an old friend. And even if they weather this storm, the world has even more in store for them, from Evil Warrick, to an upstart villain team, to a love-sick reality warper. They are heroes. They are people. This is their...   [click here for more]
Paradox-Omni Entertainment  $2.99

Add to DriveThruFiction.com Order  
A Stranger in Paradise

A Stranger in Paradise


A Stranger in Paradise, by Edward M. Lerner, collects five of the bestselling author's science fiction stories: The Night of the RFIDs, Two kinds of People, Better the Devil You Know, Small Business, and A Stranger in Paradise....   [click here for more]
Wildside Press  $2.99

Add to DriveThruFiction.com Order  
Afterblight Chronicles: America

Afterblight Chronicles: America


THE CULL ROSE FROM NOWHERE... It swept across the world like the end of times, a killer virus that spared only those with one rare blood type. Now, in the ruined cities, cannibalism and casual murder are the rule, and religious fervour vies with cynical self-interest. The few who hope to make a difference, to rise above the monsters, must sometimes become monsters themselves. THE CULLED: Even before...   [click here for more]
Rebellion Publishing Ltd  $12.99 $9.99

Add to DriveThruFiction.com Order  
Afterblight Chronicles: Kill or Cure

Afterblight Chronicles: Kill or Cure


We all go a little crazy sometimes... Jasmine has spent five years underground, locked in a secret government bunker. Outside, the world has gone to hell, a mysterious virus killing all but 1 in 20 of the world's population. It's enough to drive anyone mad - but Jasmine's crazier than most. The cure she was working on had an unexpected side effect, psychotic symptoms which only powerful drugs can...   [click here for more]
Rebellion Publishing Ltd  $7.99 $5.99

Add to DriveThruFiction.com Order  
Age of Aztec

Age of Aztec


The date is 4 Jaguar 1 Monkey 1 House; November 25th 2012, by the old reckoning. The Aztec Empire rules the world, in the name of Quetzalcoatl – the Feathered Serpent – and his brother gods. The Aztec reign is one of cruel and ruthless oppression, fuelled by regular human sacrifice. In the jungle-infested city of London, one man defies them: the masked vigilante known as the Conquistador....   [click here for more]
Rebellion Publishing Ltd  $6.99 $4.99

Add to DriveThruFiction.com Order  
Age of Heroes

Age of Heroes


CHILDREN OF THE GODS! Born of the Gods, created to be their champions, their names echo in eternity: Theseus, Perseus, Hippolyta, Heracles, Helen of Troy and all their half-mortal ilk. But the Age of Heroes is long past, and no more epics are told of their deeds. Blessed – and cursed – with eternal life, they have walked the Earth for millennia, doing their best to fit in among ordinary...   [click here for more]
Rebellion Publishing Ltd  $6.99

Add to DriveThruFiction.com Order  
Age of Legends

Age of Legends


THE DEFENDERS OF THE LAND! As Britain struggles under a burgeoning fascist government, Prime Minister Derek Drake plays the man of the people, while simultaneously purging the country of “undesirables.” When bike courier and subversive graffiti artist Ajia Snell runs into trouble with the authorities, she finds herself recruited by living incarnations of Britain’s ancient legends,...   [click here for more]
Rebellion Publishing Ltd  $6.99

Add to DriveThruFiction.com Order  
Age of Shiva

Age of Shiva


THE AGE OF WAR! Zachary Bramwell, better known as the comics artist Zak Zap, is pushing forty and wondering why his life isn’t as exciting as the lives of the superheroes he draws. Then he’s shanghaied by black-suited goons and flown to Mount Meru, a vast complex built atop an island in the Maldives. There, Zak meets a trio of billionaire businessmen who put him to work designing costumes...   [click here for more]
Rebellion Publishing Ltd  $8.99 $4.99

Add to DriveThruFiction.com Order  
Age of Voodoo

Age of Voodoo


Lex Dove thought he was done with the killing game. A retired British wetwork specialist, he’s living the quiet life in the Caribbean, minding his own business. Then a call comes, with one last mission: to lead an American black ops team into a disused Cold War bunker on a remote island near his adopted home. The money’s good, which means the risks are high. Dove doesn’t discover...   [click here for more]
Rebellion Publishing Ltd  $6.99 $4.99

Add to DriveThruFiction.com Order  
Apex Magazine -- Issue 96

Apex Magazine -- Issue 96


Apex Magazine is a monthly science fiction, fantasy, and horror magazine featuring original, mind-bending short fiction from many of the top pros of the field. New issues are released on the first Tuesday of every month. EDITORIAL Words from the Editor-in-Chief—Jason Sizemore FICTION How Lovely Is the Silence of Growing Things—Evan Dicken The Three-tongued Mummy—E. Catherine Tobler...   [click here for more]
Apex Book Company  $2.99

Add to DriveThruFiction.com Order  
Bait & Switch

Bait & Switch


Return to The Superhero's Son universe ... As the children of an infamous supervillain, Bait and Switch find themselves ostracized and isolated from their peers in the superhero school they attend. Even many of their teachers distrust them on the basis of their parentage. Switch wants to leave the Academy and break their supervillain mother out of prison, while Bait sees the Academy...   [click here for more]
Annulus Publishing   FREE 

Buy Now  
BattleTech Legends: Main Event

BattleTech Legends: Main Event


The Black Thorns, a newly minted mercenary company, accepts a garrison contract on the backwater world of Borghese after brutal fighting on the world of Galatea. What seems like a normal tour of duty is punctuated by political infighting and a Clan invasion. Will their charismatic leader lead them to victory against the Clans, or will he lose his command again? Note: This zip file contains...   [click here for more]
Catalyst Game Labs  $4.99

Add to DriveThruFiction.com Order  
BattleTech: A Splinter of Hope

BattleTech: A Splinter of Hope


The Federated Suns stand at the edge of a precipice… Violent expansion of the Capellan Confederation and the Draconis Combine has cost recently crowned First Prince Julian Davion more than just countless strategic worlds. The war’s toll claimed a mentor and close friend, and righteous vengeance burns bright. To rally his people and preserve the future of the...   [click here for more]
Catalyst Game Labs  $2.99 $2.24

Add to DriveThruFiction.com Order  
BattleTech: A Splinter of Hope/The Anvil

BattleTech: A Splinter of Hope/The Anvil


VICTORY AT ANY COST… Jump into your BattleMech cockpit, fire up your fusion engine, and charge into the fray with two all-new BattleTech novellas from Philip A. Lee and BattleTech veteran Blaine Lee Pardoe. A Splinter of Hope: Violent expansion of the Capellan Confederation and the Draconis Combine has cost recently crowned First Prince Julian Davion both his mentor...   [click here for more]
Catalyst Game Labs  $4.99 $3.74

Add to DriveThruFiction.com Order  
BattleTech: Kill Zone (BattleCorps Anthology Vol. 7)

BattleTech: Kill Zone (BattleCorps Anthology Vol. 7)


REDEMPTION. RESISTANCE. RESOLVE. A young Davion MechWarrior seeks to repay a debt incurred by the misfortunes of the Fourth Succession War. A tightly-knit farming community bands together to repel vicious pirates or risk losing their livelihoods…and their lives. A Kurita MechWarrior given a final chance to serve the Dragon stands alone against renegade mercenaries. And the...   [click here for more]
Catalyst Game Labs  $4.99 $3.74

Add to DriveThruFiction.com Order  
Blood Gems

Blood Gems


A field trip to the beach quickly turns into a nightmare when cyborgs attack Bait, Switch, and their classmates. The nightmare becomes even worse when two new and dangerous supervillains kidnap Switch under the orders of their master, a mysterious man known as the Collector whose true goals are an enigma. To rescue Switch, Bait must seek the aid of his supervillain father, Tsunami, who will be able...   [click here for more]
Annulus Publishing  $3.99

Add to DriveThruFiction.com Order  
Brothers

Brothers


After a year of fighting villains as the superhero Bolt, Kevin Jason must now deal with integrating his newly-rescued twin brother into the Young Neos, as well as think about his future career as a superhero. Things become more complicated, however, when Kevin's brother is kidnapped by a mysterious new team of supervillains whose motives are unknown but whose actions could spell the end of his brother's...   [click here for more]
Annulus Publishing   FREE 

Buy Now  
Chance of a Lifetime

Chance of a Lifetime


The opportunity to swap bodies with those outworld aliens and to see the other planet as its natives saw it was too good to pass up. It would be a unique experience...the chance of a lifetime! Note: This digital edition includes the PDF, EPUB and MOBI (Kindle) versions of the book.   ...   [click here for more]
Wildside Press  $0.99

Add to DriveThruFiction.com Order  
Club Anyone: An Interface Zero Novel

Club Anyone: An Interface Zero Novel


In an age of augmented reality, love is found in the most dangerous places. Stranded on Mars, megacorp programmer Derek Tobbit drowns his sorrows in augmented reality sex, only to have his drug-fueled midlife crisis hijacked by a conspiracy that threatens the solar system. It will take all his hacker skill, the friendship of a rogue AI, and the redemptive power of an impossible love to save them....   [click here for more]
Gun Metal Games  $4.97

Add to DriveThruFiction.com Order  
Counterparts

Counterparts


Seventeen-year-old Talon loves being a superhero and desires to keep fighting crime for the rest of her life. But when her mother--an internationally-known CEO of a major fashion company--suddenly falls ill, Talon must now choose between succeeding her mother as the owner of the company or staying as a superhero. If Talon does not retire, her mother's company will be sold; but if she retires, then...   [click here for more]
Annulus Publishing  $3.99

Add to DriveThruFiction.com Order  
Countown to Armageddon

Countown to Armageddon


Hezbollah has obtained an atomic bomb and a would-be martyr eager to deliver it-and that's the good news. The bad news, unknown even to Hezbollah, is that their physicist has also found a way to take his new bomb back to a turning point in European history. Harry Bowen, an American physicist, and Terrence Ambling, a British agent turned historian, are determined to stop Abdul Faisel and prevent the...   [click here for more]
Wildside Press  $4.99

Add to DriveThruFiction.com Order  
Dawning of the Wolf Age - The Tribes of Yggdrasil: Book 1

Dawning of the Wolf Age - The Tribes of Yggdrasil: Book 1


Some doors should never be opened. “My name is Haldor Olsen. I was happy once. I had everything a man could want: a good job, a beautiful wife and an amazing son. In a flash it was ripped away. What remains is a raging ember of what I once was. The Hrymar came without warning, hungry for slaves. At first attacking ships, and then our first colony on Epsilon Eridani. Now they’re...   [click here for more]
Asgard Studios  $5.99 $2.99

Add to DriveThruFiction.com Order  
Days

Days


Welcome to the Days gigastore! Seven storeys high, two-and-a-half kilometres to a side. Within its walls, you can buy anything and everything! But there is a price to be paid... A savagely funny satire on a society obsessed with consumption, Days paints a picture of a future that is just around the corner. A remarkable feat of visionary writing - blackly funny, lyrical and tightly plotted - it affirmed...   [click here for more]
Rebellion Publishing Ltd  $7.99 $3.99

Add to DriveThruFiction.com Order  
Defying The Skies

Defying The Skies


"In addition to her distinguished career with the Terran military, Commander Geneva Greyson has finally achieved harmony in her personal life. Her renewed relationship with her mother has grown stronger and she's settled into a comfortable arrangement with the two men she loves. Marcus confesses a dark fantasy to her while she's on leave from duty—not only does he have feelings for her, he's developing...   [click here for more]
Double Dragon Publishing  $14.99 $5.99

Add to DriveThruFiction.com Order  
Dimensions

Dimensions


Sixteen-year-old Treehugger is looking forward to visiting the newly opened school for young superhumans along with her teammates. In particular, she's been looking forward to seeing a particularly handsome young superhero who she's had a crush on for a long time, though her feelings for him are also mixed with anxiety at the idea of actually talking to him. But when Treehugger is kidnapped by members...   [click here for more]
Annulus Publishing  $3.99

Add to DriveThruFiction.com Order  
Disintegration

Disintegration


Dutiful soldier Callum Renwick wakes up in the underground laboratory of a mercenary organization. He learns he was the sole survivor of an attack that destroyed his unit, his hometown, and his family. In addition to the loss of his loved ones, he discovers that due to his injuries, half his body has been supplanted by artificial skin and cybernetic parts. Once he has recovered, he is assigned to the...   [click here for more]
Double Dragon Publishing  $14.99 $5.99

Add to DriveThruFiction.com Order  
Dreamspy: Tales of the Luren, Book Two

Dreamspy: Tales of the Luren, Book Two


In THOSE OF MY BLOOD, humans exploring a galactic spacecraft that had crashed on Earth's moon wakened an alien, a luren, who desperately tried to prevent the contamination of human culture with galactic technology--by lying to Earth's vampires. DREAMSPY reveals the truth behind those lies, presenting the story of Elias, a musician kidnapped from Earth into a tangle of galactic espionage, amidst a galactic...   [click here for more]
Wildside Press  $3.99

Add to DriveThruFiction.com Order  
Enigma

Enigma


Barry Drake returns. The starship CONUNDRUM is the first manned vessel to leave Earth's solar system using Weinberg Drive. It reaches the Pegasus system, 50 light years away, where the earthlike planet Sisyphus orbits a G-type star and may contain what we truly hope to find, proof that we are not alone....   [click here for more]
Double Dragon Publishing  $14.99 $5.99

Add to DriveThruFiction.com Order  
Fear and Courage: Fourteen Writers Explore Sime~Gen

Fear and Courage: Fourteen Writers Explore Sime~Gen


Welcome to the first Sime~Gen Anthology written by the fans. This Anthology is a compilation of stories and poetry written by people who have been influenced by the published works of Jacqueline Lichtenberg and Jean Lorrah, in such a powerful way that they felt compelled to explore this universe in their own writing. Here are: Forewords, by Jacqueline Lichtenberg and Jean Lorrah "Moonlight...   [click here for more]
Wildside Press  $4.99

Add to DriveThruFiction.com Order  
First Date

First Date


Alex Fry (Beams) has a great life. He’s a famous sidekick, works for one of the best superheroes in the world, and is even dating the girl of his dreams. While Alex can’t publicly accept the praise and accolades his sidekick persona receives from fans, his life is good nonetheless. That is, until he becomes the target of the most infamous assassin in the world, whose presence in Golden City forces...   [click here for more]
Annulus Publishing  $4.99

Add to DriveThruFiction.com Order  
First Job

First Job


In a world where superheroes are a business, sixteen-year-old Alex Fry gets the dream job of teenagers everywhere when he is hired by the famous superhero Rubberman as his sidekick. As Rubberman's sidekick, Alex hopes to not only learn how to use his powers, but also save up enough money to buy his first car before he heads off to college. But Alex gets more than he bargains for when a powerful supervillain...   [click here for more]
Annulus Publishing   FREE 

Buy Now  
First Magic

First Magic


When a superhero serial killer comes to Golden City with the intent of killing Rubberman, Alex Fry (Beams) and his boss desperately try to track him down before he kills them. And when it turns out that the killer is Rubberman’s ex-wife seeking revenge against him, Beams finds himself facing dark magic unlike anything he has face before. But when a legendary retired superhero shows up and offers...   [click here for more]
Annulus Publishing  $4.99

Add to DriveThruFiction.com Order  
First Mentor

First Mentor


After the events of “First Magic,” Alex Fry (Beams) heads out to a small town in West Texas to train under Rubberman’s mentor, one of the first ever superheroes. Beams finds his mentor’s training a bit unusual, but he expects nothing interesting to happen while out there. When aliens suddenly start abducting cows from local ranches, however, Beams finds himself thrown into a web of intrigue,...   [click here for more]
Annulus Publishing  $4.99

Add to DriveThruFiction.com Order  
First Offer

First Offer


After nearly crashing his boss’ car, Alex Fry (Beams) finds his relationship with his boss has soured, to the point where he no longer enjoys going to work for him anymore. And when a new superhero in town offers Beams higher pay to work for him, Beams finds the offer almost too tempting to resist. But there is more to this new superhero that meets the eye, and if Beams makes the wrong choice, he...   [click here for more]
Annulus Publishing  $4.99

Add to DriveThruFiction.com Order  
First War

First War


With war raging in the streets between superheroes and vigilantes, Alex Fry (Beams) strives to not only survive the war, but also end it before the superpowered battles completely demolish his city. In addition, Beams must decide how much longer he will continue to work for his boss and his future in the superhero business in general. But all of that fades into the background when Beam’s worst enemy...   [click here for more]
Annulus Publishing  $4.99

Add to DriveThruFiction.com Order  
Glitch Rain

Glitch Rain


Akuba is a low-level hacker for the city's wealthy, making just enough to keep her bills paid and her booze flowing. Her job is to scrub the social feeds for faces who don't want to be seen, hanging out at parties to guard the elite from errant social media statuses and incriminating photo posts. Not the most glamorous job, but she’s getting by. When an old debt comes due early, suddenly she...   [click here for more]
Apex Book Company  $2.99

Add to DriveThruFiction.com Order  
Hero Blues (A Neigborlee, Ohio Story, #5)

Hero Blues (A Neigborlee, Ohio Story, #5)


Superheroes have it rough—especially when the towns they protect expect them to fix everything, from forgetting to fill their gas tanks to children running wild to the consequences of a lack of common sense. Jane is finally fed up with being the Ghost, notifies the citizens in her town of mental midgets that she’s quitting, and sets off to make a new life and solve some mysteries of her...   [click here for more]
Untreed Reads Publishing  $6.99

Add to DriveThruFiction.com Order  
Heroes

Heroes


In order to become a member of the largest superhero organization in the country, Kevin Jason (Bolt) must locate and capture one of the most infamous supervillains in the country, a supervillain who has never been caught and whose power dwarfs his own. To achieve this goal, Kevin and his friends, the Young Neos, must work together to capture this supervillain. But the situation becomes far more tense...   [click here for more]
Annulus Publishing  $3.99

Add to DriveThruFiction.com Order  
Hexarchate Stories

Hexarchate Stories


NEW YORK TIMES BEST-SELLING AUTHOR – WINNER OF THE 2016 LOCUS AWARD – NOMINATED FOR THE 2016 HUGO, NEBULA AND ARTHUR C. CLARKE AWARDS. An ex-Kel art thief has to save the world from a galaxy-shattering prototype weapon... A general outnumbered eight-to-one must outsmart his opponent... A renegade returns from seclusion to bury an old comrade... From the incredible imagination of Hugo- and Arthur...   [click here for more]
Rebellion Publishing Ltd  $6.99

Add to DriveThruFiction.com Order  
Imagined Slights

Imagined Slights


An collection of previously unseen stories, favourites from 'Interzone' magazine and contributions to numerous science fiction and fantasy anthologies 'Imagined Slights' showcases one of the most versatile and elegant writers on the genre scene today. Whether taking you through 'Britworld(TM)' - Britain turned into a theme park, exploring the possibilities of the lonely hearts ad in 'Thanatophile Seeks...   [click here for more]
Rebellion Publishing Ltd  $7.99 $3.99

Add to DriveThruFiction.com Order  
Liquid Crystal Nightingale

Liquid Crystal Nightingale


Go deeper, they said. Look closer. Pleo Tanza is a survivor. Her father was broken by tragedy, her twin sister is dead—chewed up and spat out by the corruption and injustice of Chatoyance—but she’s going to make it, whatever it takes. She’s going to get off this rock. But escape is for the rich or lucky. Pleo’s framed for the murder of a rival student—the daughter...   [click here for more]
Rebellion Publishing Ltd  $5.99

Add to DriveThruFiction.com Order  
London Holiday

London Holiday


It started with an overnight stay at Divine’s Emporium and a high school computer programming assignment. Athena found an unusual video camera, hooked it up to her computer, and videotaped her cousin, London, whom everyone called Doni. She thought nothing of it, after all the other odd events of that night. After all, Neighborlee, Ohio was the weirdness capital of the United States, and Divine’s...   [click here for more]
Untreed Reads Publishing  $6.99

Add to DriveThruFiction.com Order  
Mars Needs Books!: A Science Fiction Novel

Mars Needs Books!: A Science Fiction Novel


In the not-so-distant future, men have come to Mars to escape the oppressive Earth government. Ryan is an agent for a super-secret government agency, the Department of Control (DOC), and has always been willing to do whatever his masters want of him. But on Mars, everything is different, and all that Ryan does is read books: hardboiled, noir crime paperbacks dating from the last century. In fact, such...   [click here for more]
Wildside Press  $3.99

Add to DriveThruFiction.com Order  
Minimum Wage Sidekick Omnibus: Books 1-3

Minimum Wage Sidekick Omnibus: Books 1-3


Action, adventure, and more in three great superhero books! For the first time ever, get the first three Minimum Wage Sidekick books in one convenient package! In “First Job,” sixteen-year-old Alex Fry (Beams) gets his first job as a sidekick and must decide where his loyalties lie; in “First Date,” Beams must evade a supervillain assassin hired to take him down; and in “First...   [click here for more]
Annulus Publishing  $9.99

Add to DriveThruFiction.com Order  
Ninefox Gambit

Ninefox Gambit


NEW YORK TIMES BEST-SELLING AUTHOR – NOMINATED FOR THE 2019 HUGO AWARD FOR BEST SERIES – WINNER OF THE 2016 LOCUS AWARD – NOMINATED FOR THE HUGO, NEBULA AND ARTHUR C. CLARKE AWARDS. When Captain Kel Cheris of the hexarchate is disgraced for her unconventional tactics, Kel Command gives her a chance to redeem herself, by retaking the Fortress of Scattered Needles from the heretics. Cheris’s...   [click here for more]
Rebellion Publishing Ltd  $6.99

Add to DriveThruFiction.com Order  
One Bullet Can Save A Life

One Bullet Can Save A Life


After the Femme Fatale virus wiped out 20 percent of women, the world fell into chaos. One father has to make the ultimate sacrifice for his daughter. A short story of 2,000 words, plus samples of other short stories. Includes a PDF and an EPUB version. This short story appears in the collection Short Lives, which contains 30 short stories for a dollar, and is available here. ...   [click here for more]
Dimension Comics  $0.50 $0.30

Add to DriveThruFiction.com Order  
Other Worlds

Other Worlds


"Other Worlds" collects 5 short stories of science fiction, fantasy, horror and suspense. On sale, it works out to 10 cents per story. Also, check out my store-wide 60% off sale, where you can get entire books, prestige classes and adventures for 80 cents, available here and here Dust In The Wind: Humanity is rebuilding after a zombie apocalypse, but that doesn't mean there isn't an occasional...   [click here for more]
Dimension Comics  $1.00

Add to DriveThruFiction.com Order  
Personal Recognizance: Sime~Gen, Book 9

Personal Recognizance: Sime~Gen, Book 9


Vret McClintock, a young channel in training at the world-famous Rialite First Year Camp, overhears the sultry female voice of Ilin Sumz, is stricken with love, and decides to pursue her. He discovers that Ilin is running the illicit historical fantasies board on the campus mainframe computer. Vret must then risk his future career to extricate his love from her web of dirty secrets, before they can...   [click here for more]
Wildside Press  $3.99

Add to DriveThruFiction.com Order  
Powers

Powers


Blizzard just wants to kick back and relax with her friends while visiting her family. She doesn't want to deal with supervillains, secret government conspiracies, or any of the various other things that superheroes deal with on a daily basis. Unfortunately, Blizzard finds herself working alongside a government agent who seeks to recover an object stolen from the government long ago. And if Blizzard...   [click here for more]
Annulus Publishing  $3.99

Add to DriveThruFiction.com Order  
Displaying 1 to 50 (of 117 items) Result Pages:  1  2  3  [Next >>] 
Select Page Number