Atomic Runner for the Sega Genesis is an action-platformer released in 1992. Originally titled Chelnov, it features an innovative auto-running mechanic combined with shooter elements. Players guide the titular Chelnov, a transformed human with newfound powers, across various stages filled with alien adversaries. Chelnov continuously moves forward, but players can adjust his speed and direction. The game is renowned for its challenging gameplay, diverse weapon upgrades, and unique fusion of side-scrolling platform action with shoot 'em up dynamics, set against a striking visual backdrop with a sci-fi theme.