Eight tribes land on a Jurassic island and fight over the only resource that matters: food. Hunting feeds your camp, and a camp that stops hunting starves.
Your people are not fixed. A commoner who fights and survives grows: raise his health and he becomes a muscle man, raise his attack and he becomes a warrior. Mages train magic instead and learn healing, shields, fireballs, teleport and resurrection.
Tribes differ in what they can build and tame. Tyrano ride velociraptors and triceratops, Ka-noo-se heal, Romack teleport and resurrect, Moospell burn everything, Koaka fly.