I just saw this
in the new releases section of Steam, and it looks like an interesting concept. It's a turn-based strategy game in which you build up the cities of two opposing sides (Norse and Greek) and the objective is to keep them well-enough balanced that neither wipes the other out. You can place various resource-producing buildings and mythological units, but you don't have direct control over what the cities produce or how they fight. Impressions in the Steam forum are positive, and the game is only $4.49.