Since Thursday, you will be able to play games on 104 Xbox One, which were previously only available on the Xbox 360. The games include Fable II, Fallout 3, Gears Of War games and more. All this is free of charge.

Microsoft announced earlier this function at E3, promising a hundred games at first, and then a hundred more to follow later. The company delivers on its promise, though some of the popular names are not included in the first batch.

This is how it will work. If you bought the game right on your Xbox 360 in the online store, the game will be automatically added to your game library and made available for download. If you have a DVD-version of the game, you can put it in the Xbox One and play the game the same as the Xbox game.

Behind the scenes, Microsoft is working to develop patches for each of these games. When you put the DVD into your Xbox One, the console will download a patch to make it play the Xbox One.

The company has already announced some of the titles in the next game, like Halo Reach, Halo Wars, Call of Duty: Black Ops 1, Bioshock, Bioshock 2, Bioshock Infinite and Skate 3.

On Thursday, Microsoft also produces a large software update for Xbox One with a new, faster user interface. There are not many new features have compatibility as Cortana must make it to the Xbox One next year. It will look like the Xbox app for Windows 10 and less like Windows 8.

It remains unclear whether backward compatibility strong argument when it comes to holiday sales for Xbox One. But it’s nice to see that Microsoft has added this feature for free.

Here is the complete list:

kingdom for Keflings
World Keflings
Alien Hominid HD
Assassin ‘s Creed II
Asteroids Deluxe
Banjo Kazooie: NNB
BattleBlock theater
Bejeweled 2
Bellator: MMA Onslaught
Beyond Good & Evil with HD
Blood werewolf
BloodRayne: Betrayal
Call Juarez Gunslinger
Castle Crashers
Centipede & Millipede
Crazy Taxi
Death Warrior: Legends
Defense Grid
DiRT 3
DiRT autopsy
Discs Tron
Doom II
Dungeon Siege III
Earthworm Jim HD
Fable II
Fallout 3
Feeding Frenzy 2
Gears of War
Gears of War 2
Gears of War 3
Gears of War: Judgment
Golden Axe
Halo: Spartan Assault
Hardwood Backgammon
Solid Heart
Hardwood Spades
Heavy Weapon
Hexic HD
Ikaruga Arcade
Jetpac Refuelled
Joy Ride Turbo
Just Cause 2
LEGO Pirates of the Caribbean: The Video Game
LEGO Star Wars: TCS
Lode Runner
Lumines LIVE
Mass Effect
Metal Slug 3
Metal Slug XX
Might & Magic Clash of Heroes
Edge mirror
Missile Command
Friday Night Fight
Monkey Island 2: SE
Monkey Island: SE
Ms. Splosion Man
Mutant Drops Attack
N +
NBA Jam: On Fire Edition,
night in my dreams …
About: Dragon Rising
Pac-Man CE
Perfect Dark
Perfect Dark Zero
Ghost switch: Battle Grounds
Pinball FX
Plants vs. Zombies
Prince of Persia
Putty Squad
R- Type Dimensions
Rayman 3 HD
Sacred Citadel
Sega Vintage Collection: Alex Kidd & Co.
Sega Vintage Collection: Golden Axe
Sega Vintage Collection: Monster World
Sega Vintage Collection: Streets of Rage
Shadow Complex
Sonic CD
Sonic The Hedgehog
Sonic The Hedgehog 2
Sonic The Hedgehog 3
Super Meat Boy Arcade
Supreme Commander 2
Stick of Truth
Tom Clancy RainbowSix Vegas
Tom Clancy RainbowSix Vegas2
Torchlight Arcade
Toy Soldiers Arcade
Toy Soldiers: Cold War
Tron: Evolution
Ugly Americans: Apocalypsegeddon
Viva PiƱata
Viva Pinata: Council of
Wolfenstein 3D