Team Fortress Arcade, Eric Ruth's retro re-imagining of Valve's Team Fortress 2, is finally out and available as a free download via Pikimal.
It essentially takes the nine classes from TF2 and turns it into a side-scrolling early-'90s beat-'em-up that allows for four-player local multiplayer in the vein of the arcade classics Turtles in Time and Captain America and the Avengers. Online multiplayer is on the way, too.
I would give Eric my money, but he's not asking for any… so I'll just give him hearts.
[Source]