>The oldest game still available (counting by which date it was made available on Steam) is the original Counterstrike with a game ID of 10. Games 1 through 9 a

>The oldest game still available (counting by which date it was made available on Steam) is the original Counterstrike with a game ID of 10. Games 1 through 9 aren’t on the platform anymore, and I’m sure they are far from the only games deleted from the platform. For what it's worth, IDs 1 through 10 are a mix of test depots, libraries, and such.