Since there are no paylines, you need to collect 3, 4 or 5 matching symbols anywhere on the adjacent reels to win the payment. As long as you use the same symbol in 3 or more adjacent reels, starting with the first (leftmost) reel and there is no "empty" reel between positions that lack the same symbol, you can win the prize.
The slot will give you 4 types of free spin options. The first option is 25 free spins, with 10% extra wild symbols during the game. The second option gives you 15 rotations, but with 25% extra wild symbols. The third and fourth choices give you 10 free spins, 50% extra wildness and 6 free spins, and 70% extra wildness.