These games are very similar, but there is one huge difference: Caveman Keno has the “egg bonus” — three numbers are selected by the RNG before the start, and if at least two of them are selected during the game, you get a bonus (4x for 2 “eggs” and 8x-10x for 3 of them). This bonus increases your chances and therefore makes Caveman Keno a little more profitable for a player. According to studies, the average return in this game is 88%-92%, which is slightly higher than the return of a traditional game.