Microsoft revealed at E3 earlier this year that the Xbox One will be backwards compatible with some original Xbox games. It appears the feature is ready to launch, as original Xbox games are now appearing in Microsoft’s “games on demand” section of the Xbox marketplace. Star Wars: Knights of the Old Republic, Neowave: The King of Fighters, Prince of Persia, Red Faction 2, BloodRayne 2, and Dead to Rights are all available in the store, priced from $9.99 or more.

While you can buy digital copies of these titles, they won’t be available to play until October 24th. Either way, Microsoft has previously promised that original discs will work with the backward compatibility. The games follow a leaked list over the weekend that appears to detail all the first titles that will be available on Xbox backwards compatibility. Twitter user WalkingCat posted the following list:

Microsoft’s full list includes 13 games, which will all be available tomorrow:

Black

Bloodrayne 2

Crimson Skies

Dead to Rights

Fuzion Frenzy

Grabbed by the Ghoulies

Neowave: The King of Fighters

Ninja Gaiden Black

Pirates!

Prince of Persia

Psychonauts

Red Faction II

Star Wars: Knights of the Old Republic

Update, 10AM ET: Article updated with Xbox original backward compatibility launch date.