Casino Spain. Royal Casino. Drive: Multiplier Mayhem is a 5-reel, line online slot game with bonus 1xBet. WestCasino. Drive: Multiplier Mayhem is a 5-reel, line online slot game with bonus 1xBet. . NetEnt's Chief Product Officer, Simon Hammon, explained: “With bustling bet lines, NetEnt's Drive: Multiplier Mayhem is a thrilling video slot. WestCasino. betboo Brazil. Casino Spain. NetEnt's Chief Product Officer, Simon Hammon, explained: “With bustling bet lines, NetEnt's Drive: Multiplier Mayhem is a thrilling video slot. Royal Casino. Betsson Spain. betboo Brazil. Betsson Spain.