Wicked Grin

Boney Bill: Wicked Grin is a slot developed by Hacksaw Gaming, set in the classic monochrome universe of 1930s traditional animation. The game runs on a scatter-pay engine, supported by a balanced medium-volatility mathematical model, an optimal RTP of 96.27%, and a maximum win cap set at 10,000x the bet. The narrative centers on the charismatic yet sinister skeleton Boney Bill, whose grin conceals a cascade of cash rewards. The core mechanic triggers when "Wicked Grin" symbols land on the bottom row, expanding to cover the entire reel and transforming the positions into coins worth up to 500x or area multipliers of up to 20x. Access to bonus rounds relies on expanding Free Spin (FS) symbols that award between 5 and 30 free spins, distributed across the standard "Stash N Stack" mode—featuring cumulative reel multipliers—and the "Coin Craze" super bonus, where persistent collectors secure the value of all coins until the round ends.