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