: To maintain servers accessible to players who cannot use the standard Steam client due to hardware or regional restrictions.

: With the client installed, players can connect to various servers offering Team Fortress 2 gameplay, including those with custom mods and game modes.

Fully functional for play against bots via the "Offline Practice" menu.

They relied on a digital relic: . It wasn't the polished game the rest of the world played; it was a "No-Steam" ghost town. To make it work, they used RevEmu , a piece of code that tricked the game into thinking Steam was running in the background.