Caveman Craig is a sort of sidescrolling RTS with the warfare stripped out. You control Craig; he teaches skills to three flavors of cavemen (gatherers, food processors, and hunters), then releases them to perform their tasks. Hunters kill dinosaurs, gatherers drag them back to the cave and harvest berries, food processors turn dino corpses and berries into points you use to buy more cavemen. Other than the "training your peons" bit, straight out of the RTS playbook.
And if that were all there was to the game, it would get tedious quite quickly. What retains your interest are the random events that occur from time to time: Raptors wander through and start eating your fellow cavemen, at which point you want to go kill them (throwing rocks, same as with food dinos). Triceratopses can also show up and squash them. Evil cavemen attack.
There really is no denouement, however; it's possible for you to die, but rare. The developers have a version with more events and options for sale, at the modest price of $5, if you run out of things to do in the original, free game, though.