Return to player. Return to player, or RTP, of the Mariachi Mayhem slot machine is %, and if you ask us, it is. Try Mariachi Mayhem slot online for free in demo mode with no download or no registration required. The game's features include free spins & respins, the scatters. Mariachi Mayhem is a 5-reel, line online slot game with bonus round, bonus spins, instant play, autoplay, video slots, wild symbol, re-spin. Read the full game review. Game Type. This online slot game is a classic, featuring a mariachi band as its theme. Play Mariachi Mayhem slot completely for free, without spending any money. The Games Company's Mariachi Mayhem slot has 20 paylines with a giant symbols and a mariachi band that randomly appears along with free spins and re-spins. It is accompanied by fun music and sound effects, and the graphics. . Try out our free-to-play demo of Mariachi Mayhem online slot with no download and no registration required. This fast paced, 5x3 reel slot from The Games Company is a lot of fun to play with its bright 3D graphics and colossal symbols. Demo play for fun, no download or registration required. Mariachi Mayhem by The Games Company Free Play ⚡ Full review of this 5 reels & 20 lines slot ⚡ Including Big Win Video and where to play. Watch out for the and Mariachi. %. Play Mariachi Mayhem with wild reels, colossal symbols, with spins and respins galore. Get your feet moving to the beat, and grab yourself a Mexican.