These game diaries at Fidgit might interest smoe of you wanting to learn more about the game.
I’m not an expert, but I think the basic gist is that it’s a turn-based strategy warfare game based on armies of demons fighting to take over Hell. Wacky hijinks ensue.
It’s a lot more than fighting, though. Infernal diplomacy and all that. Much like Armageddon Empires, it is pretty incomprehensible at first, but it looks pretty deep.