Troy Moonbutt

Literally the only problem this game had and still has is really, really, REALLY bad pathfinding, like comically terrible to the point that the Marines campaign is easily 5x harder than the rest of the game because the hallways mess with the pathfinding mixed with the formation move that it tries to enforce. I'd kill to get an open-source fan remake of this game on PC with a map editor, random map generator, multiplayer for up to 8 players and a revamp to the controls of the game using Starcraft 2 as inspiration.