Players must choose their bets by clicking on the arrow heads. These range from 0.01 to 5.00. The bets are then multiplied by the number of lines that you wish to play with (which are also adjustable). Cool Stone Age can be played for as little as 0.01 per line, per spin or as much as 100.00 per spin.
The Brontosaurus (which is now technically incorrect) is the wild symbol. This icon can replace all others, save the scatter and bonus icons. The bonus is a vehicle, and when it appears 3 or more times anywhere on an active payline, the player will trigger the Caveman Cruiser bonus. During this bonus, it is possible to win up to 4,500 coins. The scatter symbol is a house, and when 3 or more appear anywhere on the reels, you will get to enjoy 20 free spins.