Stone Age is an online video slot by Endorphina.
Return to Player (RTP): 96%
The game features 20 paylines, while the maximum payout per spin can reach x2,500 of the bet.
Features and the main game mode
1. Winning combinations
High-value symbols pay from 2 of a kind, and low-value symbols pay from 3 of a kind.
2. Wild symbol
A Wild symbol replaces all other symbols. It also serves as a Scatter symbol, triggering a bonus game.
The Wild symbol has its own value:
– 3 Wild symbols = x2 of the bet
– 4 Wild symbols = x20 of the bet
– 5 Wild symbols = x200 of the bet
On the active payline:
– 2 Wild symbols = x0.5 of the bet
– 3 Wild symbols = x5 of the bet
– 4 Wild symbols = x50 of the bet
– 5 Wild symbols = x250 of the bet
Bonus game mode
The bonus game starts when 3, 4, or 5 Wild symbols land on the reels.
2. Number of free spins
The number of free spins is set at 10.
The player can win extra free spins.
3. Expanding symbols
When the bonus game begins, a random symbol is selected as the expanding one. Expanding symbols pay in adjacent and non-adjacent positions.
4. Extra free spins
When 3 or more Wild symbols land on the reels, the player is awarded 10 extra free spins.