The slot has two wild symbols, an Ice Wild and a Hammer Wild. Both can substitute for all the other symbols to help and form winning combinations. The Ice Wild can land on the third and fourth reel and the Hammer Wild can land on the second reel.
Ice Cave does not have any scatter symbols, rather the wild symbols are the key to the bonus features.
The main bonus feature is linked to the wild symbols. Whenever the Ice Wild lands on reels three or four it will freeze in place on the reels and remain there for all subsequent spins. Whenever it helps to form a win the payout is multiplied by 3x. The frozen wilds are only removed when the Hammer Wild lands on the second reel. The Hammer Wild also awards a 3x multiplier when it helps to form a win.
The slot also has a Feature Bet option. If you turn on the Feature Bet your total stake per spin will be increased by 50%. However, with it switched on Ice Wilds can also land on the fifth reel and this can help you form extremely valuable winning combinations.
Ice Cave offers a huge top payout of 250x for landing five of the male Viking symbols on the reels. Of course, if you land four symbols and a wild symbol the payout will increase to an even more valuable 750x and this will be a significant payout regardless of how much you are betting per spin. The other high value symbols also offer large payouts, the female Viking and wolf symbols can payout up to 100x while the raven and Viking longship can both payout up to 75x.