Retro Bull

Retro Bull is a classic sci-fi-themed slot from Kontrolleur with an RTP of 96.5%, high volatility and a maximum win of 25,000x. The game plays across five reels, five rows with Cluster Pays mechanics, meaning winning combinations form through adjacent symbols rather than fixed paylines.

Wins occur when symbols cluster together, with payouts available from any position on the grid. Cascading reels remove winning clusters and drop new symbols into empty spaces, allowing consecutive wins from a single spin. Multipliers increase in value as cascades build during a spin, and wild symbols substitute for regular symbols to complete clusters.

VOLT BOOST costs 1.25x stake per spin and increases the frequency of FUSES landing while raising the chance that OVERDRIVE will trigger. OVERCLOCK costs 10x stake per spin and significantly boosts FUSES landing frequency while making OVERDRIVE trigger much more often; this feature requires confirmation before activation.

OVERDRIVE is a free spins mode triggered when four or more FUSES land, or purchased directly via GET BONUS. During OVERDRIVE, tiles remain on the grid and their multiplier levels persist across spins.

SUPER OVERDRIVE costs 250x stake and grants eight spins with all tiles starting at x4 multiplier. This mode contains no FUSES and spins never extend beyond the initial eight.

DOUBLE PUSH OVERDRIVE costs 500x stake and grants eight spins with all tiles beginning at x4 multiplier. It includes LEVEL PUSH spins on spin one and spin five, contains no FUSES and always ends after exactly eight spins.

MAX SHOT costs 1000x stake per spin and starts each spin with all tiles at x16 multiplier, plus one SHOT tile at x256. This mode remains active until the player disables it.