For almost a year now, you have been able to play Xbox 360 games on an Xbox One or Xbox One S. Not all of your old library of games are playable, but there are more than 250 titles currently available. Xbox is also adding to this list regularly as new titles are checked and cleared for release.

But do you have to do anything different to get it to work? Exactly how will Xbox 360 games play on an Xbox One? And can you buy Xbox 360 games on an Xbox One? Here's our handy guide to the feature.

Microsoft first announced that it would be adding backwards compatibility to its current generation console during E3 2015 in June, and the initial wave of 104 games arrived in November last year.

The Xbox One is able to play Xbox 360 games through emulation software that makes the console think it's a last generation machine for the purposes of playing older games.

When a supported Xbox 360 game is started on the machine, the Xbox One opens the emulator and, in all regards, the game works as if it was running on an Xbox 360. The 360's opening screen appears first then the game will load.

All other aspects and features that would normally be available on an Xbox 360 are be available on the Xbox One too, including the hub (which can be opened through a simultaneous press of the menu and view buttons on the Xbox One controller). In addition, all new features of the Xbox One work, including the ability to take screen grabs and record and share video of gameplay.

Although Sony opted for a paid route to play PS3 games on a PS4, through the PlayStation Now cloud gaming platform, Microsoft decided to offer its backwards compatibility for free as part of the November update at the end of 2015.

If you own a supported game already, you do not have to pay anything to play it on Xbox One.

Obviously, it costs to purchase new Xbox 360 games that work on the machine.

Xbox One backwards compatibility works with digital content as well as disc games. In fact, if you enter a supported disc into your Xbox One, the machine will download the game from Xbox Live first - although you will need the disc to be in the machine each time you play.

If you own a digital copy of a supported game it appears in your games list ready for download. Check your Games and Apps hub to see if any are listed among the games yet to be installed.

Since the March 2016 update compatible Xbox 360 games have been listed for purchase on the Xbox One game store. If you are an Xbox Live Gold member, you now also see free Xbox 360 games to download each month alongside Xbox One titles as part of the Games for Gold scheme.

That means you get two free Xbox One games and two free Xbox One games a month.

Prices for the Xbox 360 games on the online store vary, but start at around £3.

If you originally set your Xbox 360 to save games to the cloud you will be able to download the save files to the Xbox One version and carry on. The cloud files are permanently associated with your gamertag so the Xbox One should do this automatically.

If you only saved your in-game progress locally, to the hard drive, you will need to restart your Xbox 360 and save them to the cloud instead. If you no longer have your Xbox 360, sadly you won't be able to access the files.

Microsoft released a list of the 104 Xbox 360 games originally, but many more have been added over time. These now include multi-disc games as Xbox has sussed out how to emulate them too.

There are now more than 250 titles available as part of the backwards compatibility scheme.

The company's plan is to eventually support every game it feasibly can bar a few that cannot be made compatible due to requiring additional accessories to run. These include games like the original Guitar Hero and Rock Band series, plus any that worked with the original Kinect. Even if you have the Xbox One Kinect, it will not be compatible with previous Xbox 360 Kinect games.

Here's a full list of the Xbox 360 games that are currently available with backwards compatibility for Xbox One (as of 28 September 2016):

  • A Kingdom for Keflings
  • A World of Keflings
  • Aegis Wing
  • Age of Booty
  • Alan Wake
  • Alan Wake's American Nightmare
  • Alien Hominid HD
  • Altered Beast
  • Anomaly Warzone Earth
  • Aqua
  • Arkanoid Live!
  • Assassin's Creed
  • Assassin’s Creed II
  • Asteroids & Deluxe
  • Babel Rising
  • Banjo Kazooie
  • Banjo-Kazooie: Nuts & Bolts
  • Banjo-Tooie
  • BattleBlock Theater
  • Bayonetta
  • Bejeweled 2
  • Bejeweled 3
  • Bellator: MMA Onslaught
  • Beyond Good & Evil HD
  • Bionic Commando Rearmed 2
  • Blood Knights
  • Blood of the Werewolf
  • Bloodforge
  • BloodRayne: Betrayal
  • Bomberman Battlefest
  • Boom Boom Rocket
  • Borderlands
  • Bound by Flame
  • Braid
  • Brain Challenge
  • Call of Duty 2
  • Call of Duty 3
  • Call of Duty: Black Ops
  • Call of Duty: World at War
  • Call of Juarez Gunslinger
  • Capcom Arcade Cabinet
  • Carcassonne
  • Castle Crashers
  • Castle of Illusion Starring Mickey Mouse
  • CastleStorm
  • Castlevania: Symphony of the Night
  • Centipede & Millipede
  • Comic Jumper
  • Comix Zone
  • Condemned: Criminal Origins
  • Counter-Strike: Go
  • Crazy Taxi
  • Crystal Defenders
  • Dark Souls
  • Dark Void
  • De Blob 2
  • Dead Space
  • Deadliest Warrior: Legends
  • Deathspank T.O.V.
  • Defense Grid: The Awakening
  • Deus Ex: Human Revolution
  • Deus Ex: Human Revolution - Director's Cut
  • Dig Dug
  • DiRT 3
  • DiRT Showdown
  • Discs of Tron
  • Domino Master
  • Doom
  • Doom II
  • Doom 3: BFG Edition
  • Doritos Crash Course
  • Double Dragon: Neon
  • Duck Tales: Remastered
  • Dungeon Siege III
  • Dungeons & Dragons: Chronicles of Mystara
  • E4
  • Earthworm Jim HD
  • EnclevermentExperiment
  • Fable II
  • Fable III
  • Faery: Legends of Avalon
  • Fallout 3
  • Fallout: New Vegas
  • Far Cry 3 Blood Dragon
  • Feeding Frenzy
  • Feeding Frenzy 2: Shipwreck Showdown
  • Final Fight: Double Impact
  • Flashback
  • Flock!
  • Forza Horizon
  • Foul Play
  • Fret Nice
  • Frogger
  • Frogger 2
  • FunTown Mahjong
  • Galaga
  • Galaga Legions DX
  • Garou: Mark of the Wolves
  • Gatling Gears
  • Gears of War
  • Gears of War 2
  • Gears of War 3
  • Gears of War: Judgment
  • Geometry Wars: Retro Evolved
  • Ghostbusters: Sanctum of Slime
  • Go! Go! Break Steady
  • Golden Axe
  • Grid 2
  • Gripshift
  • Gunstar Heroes
  • Half-Minute Hero -Super Mega Neo Climax-
  • Halo: Reach
  • Halo: Spartan Assault
  • Halo Wars
  • Hardwood Backgammon
  • Hardwood Hearts
  • Hardwood Spades
  • Heavy Weapon
  • Hexic 2
  • Hexic HD
  • Hydro Thunder
  • I Am Alive
  • Ikaruga
  • Interpol
  • Iron Brigade
  • Jeremy McGrath's Offroad
  • Jet Set Radio
  • Jetpac Refuelled
  • Joe Danger Special Edition
  • Joust
  • Joy Ride Turbo
  • Just Cause 2
  • Kameo: Elements of Power
  • Kane & Lynch 2
  • Lazy Raiders
  • Left 4 Dead
  • Left 4 Dead 2
  • Lego Batman
  • Lego Pirates of the Caribbean: The Video Game
  • Lego Star Wars: The Complete Saga
  • Lode Runner
  • Lumines Live!
  • Magic 2012
  • Mars: War Logs
  • Mass Effect
  • Metal Slug 3
  • Metal Slug XX
  • Might & Magic Clash of Heroes
  • Mirror’s Edge
  • Missile Command
  • Monaco: What's Yours is Mine
  • Monday Night Combat
  • Monkey Island: Special Edition
  • Monkey Island 2: Special Edition
  • Monopoly Plus
  • Motocross Madness
  • Mr Driller Online
  • Ms Pac-Man
  • Ms. Splosion Man
  • Mutant Blobs Attack!!!
  • MX vs. ATV Reflex
  • N+
  • NBA Jam: On Fire Edition
  • NeoGeo Battle Coliseum
  • New Rally-X
  • Nights into Dreams…
  • Nin2-Jump
  • Of Orcs and Men
  • Operation Flashpoint: Dragon Rising
  • Outland
  • Pac-Man
  • Pac-Man: Championship Edition
  • Pac-Man: Championship Edition DX+
  • Pac-Man Museum
  • Peggle
  • Perfect Dark
  • Perfect Dark Zero
  • Phantasy Star II
  • Phantom Breaker: Battle Grounds
  • Pinball FX
  • Plants vs. Zombies
  • Portal 2
  • Portal: Still Alive
  • Prince of Persia
  • Putty Squad
  • Puzzlegeddon
  • Qix++
  • R-Type Dimensions
  • Rayman 3 HD
  • Rayman Origins
  • Red Dead Redemption
  • Red Faction: Battlegrounds
  • Runner2
  • Sacred 3
  • Sacred Citadel
  • Saints Row IV
  • Sam & Max Save the World
  • Sam & Max Beyond Time & Space
  • Samurai Shodown II
  • Sega Bass Fishing
  • Sega Vintage Collection: Alex Kidd & Co.
  • Sega Vintage Collection: Golden Axe
  • Sega Vintage Collection: Monster World
  • Sega Vintage Collection: Streets of Rage
  • Shadow Complex
  • Shank 2
  • Skullgirls
  • Small Arms
  • Sonic 4 Episode II
  • Sonic & Knuckles
  • Sonic CD
  • Sonic The Fighters
  • Sonic The Hedgehog
  • Sonic The Hedgehog 2
  • Sonic The Hedgehog 3
  • Sonic The Hedgehog 4 Episode I
  • Soulcalibur
  • Soulcalibur II HD
  • South Park: The Stick of Truth
  • Space Giraffe
  • Spelunky
  • Splosion Man
  • SSX
  • Star Wars: The Force Unleashed
  • Star Wars: The Force Unleashed II
  • Super Meat Boy
  • Supreme Commander 2
  • Syberia
  • Tekken Tag Tournament 2
  • Texas Hold 'Em
  • The Cave
  • The King of Fighters '98 Ultimate Match
  • The Maw
  • The Witcher 2: Assassins of Kings
  • Ticket to Ride
  • Tom Clancy’s Rainbow Six Vegas
  • Tom Clancy’s Rainbow Six Vegas 2
  • Torchlight
  • Tour de France 2009
  • Toy Soldiers
  • Toy Soldiers: Cold War
  • Trials HD
  • Triggerheart Exelica
  • Tron: Evolution
  • Ugly Americans: Apocalypsegeddon
  • Unbound Saga
  • Virtua Fighter 5 Final Showdown
  • Viva Piñata
  • Viva Piñata: Trouble In Paradise
  • Wolfenstein 3D
  • Word Puzzle
  • XCOM: Enemy Unknown
  • XCOM: Enemy Within
  • Zuma
  • Zuma's Revenge