Mild gratuitous violence. Arrow keys to move, space to shoot. Of course, Ug cannot throw rapid-fire spears, not being a machine gun. This is literally impossible. Don't expect to get more than about 10 Mammoth steaks. It IS a tycoon game, there just weren't upgrades back then. You can only throw your spear right, so you need good tactics. Hearts show your health.
@Ashurbanipal_II for the number counter. Note: The Neanderthals snuffed it because they played brainrot like this. Look out for that caveman base in later games of mine... This is a multi-award winning game whatever that means.