Recommend a game

I would like a strategy game (but not necessarily) where you need to play for some animals / demons / aliens and just creatures, for example StarCraft 2 Zerg campaign or Alien vs Predator alien campaign (and from the old part where you could go through the whole cycle i.e. Facehugger > Chestbreaker > Vzlosly alien is fun to play on different steps of the food chain).