Return to player, or RTP, of the Mariachi Mayhem slot machine is %, and if you ask us, it is. This online slot game is a classic, featuring a mariachi band as its theme. %. . Return to player. Mariachi Mayhem is a 5-reel, line online slot game with bonus round, bonus spins, instant play, autoplay, video slots, wild symbol, re-spin. The game's features include free spins & respins, the scatters. Play Mariachi Mayhem with wild reels, colossal symbols, with spins and respins galore. 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. Watch out for the and Mariachi. Read the full game review. 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. Demo play for fun, no download or registration required. Try Mariachi Mayhem slot online for free in demo mode with no download or no registration required. 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. Get your feet moving to the beat, and grab yourself a Mexican. Play Mariachi Mayhem slot completely for free, without spending any money. Game Type. It is accompanied by fun music and sound effects, and the graphics.