LOS ANGELES — Microsoft announced today that it will open up backward compatibility for the Xbox One, letting users play their older Xbox 360 library with some new functionality.

At its E3 press conference this morning, Microsoft said that it will add about 100 titles this year, with “hundreds” more coming later. You simply need to put in the original Xbox 360 disc to have an Xbox One compatible version show up in their game library.You don’t need to pay for games you already own, says Microsoft. The PlayStation 4 doesn’t have true backward compatibility — to play PS3 games on the newer box, you have to steam it from PlayStation Now for a fee, even if you own it. So this is a win for the Xbox in the $55 billion dollar console market.

Some preview titles are available today for Xbox Preview members, with full functionality opening up this holiday for all players.

“With Xbox One backward compatibility, we won’t charge you to play the games you already own,” Microsoft’s Mike Ybarra said onstage.

Xbox Live functionality lets users take screenshots, turn on broadcasting, and join multiplayer games — all powered by Microsoft’s Windows 10 operating system. Developers just need to approve titles to open up this functionality.

Here is the list of games that will work when this feature rolls out:

  • Banjo-Kazooie: Nuts-n-Bolts
  • Banjo-Kazooie
  • Banjo-Tooie
  • BattleBlock Theater
  • Defense Grid
  • Geometry Wars Evolved
  • Hexis HD
  • Jetpac Refuelled
  • Kameo
  • Mass Effect
  • Perfect Dark
  • Perfect Dark Zero
  • Small Arms
  • Super Meat Boy
  • Toy Soldiers
  • Toy Soldiers: Cold War
  • Viva Piñata
  • Viva Piñata: Trouble In Paradise

You can't solo security COVID-19 game security report: Learn the latest attack trends in gaming. Access here