oh man I spent so much time playing the various Endless War games back in the day

Last Stand (which Ross Scott had a pretty good video on) was a really neat zombie survival game (although I think I only ever played the first one, maybe a bit of the second one, I don't remember it too well)

Sword and Sandals, a really cool RPG with turn-based gladiatorial fights

Interactive Buddy, not much of a game, but it was a lot of fun dragging that little guy around

Bartender the Right Mix, a classic, pretty much what it says on the tin

not exactly a game, but still really fun - Pimp my Gun (it seems like the site for that one finally went down, it had stuck around without updates for like a decade) which allowed you to basically drag parts around and make 2D guns, it was really neat