Mad Machine

About this Slot

Mad Machine is a steampunk and sci-fi themed slot from Rat Hole Reels with an RTP of 96%, low volatility and a maximum win of 5,000x. The game uses a 5x5 grid with cluster pays, where matching symbols connect in groups to form wins rather than following traditional paylines. Winning symbols then cascade, with new symbols falling to fill empty spaces and potentially create additional winning combinations. Land 3 or more Scatters anywhere on the grid to trigger Free Spins, entering an automatic bonus sequence that uses the same cluster and cascade rules as the base game. During Free Spins, landing additional Scatters can retrigger the feature and extend your bonus round. Mega Spins can be purchased from the bonus menu, granting 20 free spins with increased rates for premium symbols to land on the reels. The cluster and cascade mechanics remain active throughout Mega Spins, and the Overcharge Chamber may activate during this mode. Bonus Hunt is an optional feature that activates across consecutive spins, costing 5x your bet per spin. While Bonus Hunt is active, the spawn rates for Scatters and Switches increase, making both Free Spins and the Overcharge Chamber more likely to trigger. Collect 4 Switches in a single spin to enter the Overcharge Chamber, a separate bonus feature with its own distinct symbol set and charge system. Within the Overcharge Chamber, symbols lock into sockets, refresh charges and accumulate chamber value through a sequence of value-building and effect symbols. Four bonus buy options are available: Bonus Hunt at 5x bet, 10 Free Spins at 100x bet, Overcharge Chamber at 200x bet, and 20 Mega Spins at 300x bet.