In Tunnel Wars, you play as either a dwarf or a goblin on opposite sides of the decades long Copper War.

It isn’t a serious game by any measure of the word “serious,” and this was a first attempt at a 24 hour RPG, but it’s probably playable.

A game about goblins and dwarves running around in magic pants made of copper fighting a war
No, really, that’s actually what the game is about