Steam launched on September 12, 2003, making it 20 years old today, and Valve has honored that milestone in the same way it always acknowledges the passage of time: with a sale. All Valve games are on sale today for the The Steam 20th Anniversary Celebration, as well as a few games from other publishers, and there are some free Steam profile accouterments in the Points Shop.

Valve has also turned the Steam store’s background “army green” like it was in 2003, when it looked like this:

(Image credit: Valve)

Back then, Steam was mainly a tool for Counter-Strike updating and matchmaking, but when Half-Life 2 came out in 2004, it had to be tied to a Steam account, and that really marked the beginning of the Steam store as we know it now. It also made people pretty mad: The idea that we needed online accounts to access games other than EverQuest was the scary gaming trend of the 2000s. 20 years later, people get mad when a game isn’t available on Steam, so Valve did pretty well for itself.

By mrtrv