Popular games built on game engine Simple Sonic Worlds

Sonic Madness is a 2D side-scrolling platformer fan game that features a unique character-swapping loop across a multi-act campaign structure. Instead of controlling traditional heroes, players directly command Dr. Robotnik and Metal Sonic, with gameplay split into distinct character-specific acts that require completely different navigation mechanics. When controlling Metal Sonic, gameplay focuses on momentum-based speed, utilizing precise jumps, traditional spin-dashes, and sudden high-speed horizontal dashes to eliminate environmental hazards and enemies. Conversely, acts featuring Dr. Robotnik transition the gameplay into a methodical, physics-based aerial platformer. Players use a limited-use jetpack mechanic to hover, bypass vertical obstacles, and position themselves during complex boss encounters against rival robotic units. The game includes custom 2D pixel-art menus, traditional checkpoint systems, classic ring-collection loops, specialized underwater sections, and distinctly themed levels including "Star Brain Zone" and "Funk Surgery Zone."

Planet Oio is a game where you play as the Enerbeing, Oio. You must save the planet from evil bucket-like robots!

Cosmic Boll is a beat 'em up with slope physics built on Clickteam Fusion 2.5 and the Sonic Worlds Delta engine. It mainly takes inspiration from GBA beat 'em ups such as Dragon Ball Advance Adventure and Astro Boy Omega Factor.