Mob Marathon is a side-scrolling endless runner where Twitch viewers help or hinder the runner in real-time. Featuring 25+ viewer commands, 9 transforming characters with unique special abilities, online global leaderboards, boss encounters, and chaos-driven gameplay designed for streamer-centric play. Built solo by indie developer datsusara_aki, this game combines classic auto-runner mechanics with a deep Twitch chat integration layer. Viewers can heal, attack, gacha-bomb, or even spawn themselves as co-runners alongside the streamer's character. Released May 20, 2026 on Steam.