Impire DOES in fact contain two different factions for you to play. There is also a skirmish mode for 2-4 players. (You can't play the skirmish mode solo as the single player AI was made to handle the story campaign and not centered around building opposing dungeons. We wanted a more specific "crafted story" feel to the campaign, which is something you don't see these days when procedural generated content is common, so that's where the focus was. (Not that there's anything wrong with procedurally generated content- Impire just works better as a hand-crafted experience where every level is unique.)