Troll Hunters includes a wild symbol (the golden rune). The wild symbol substitutes for any other symbol to help comprise winning combinations. Winning combinations are removed after collected and remaining symbols drop down to possibly form new winning combinations. The wild symbol appears at the middle symbol when a winning combination of 3 symbols is removed from the grid. A win multiplier is increased at each new drop. If all symbols are removed from the grid, a special full clear win is awarded. Troll Hunters includes a bonus game. The bonus game is a set of free game rounds and is triggered if a column with "BONUS" is fully cleared from symbols. A multiplier is set based on the number of fully cleared "BONUSâ€ columns. Wins are achieved by getting 5 or more matching symbols anywhere on the grid. All wins in the bonus game are multiplied by the multiplier.