Play Sonic the Hedgehog 2 (World) (Beta) (Simon Wai) [Hack by Esrael v0.23] (~Sonic 2 Delta) Online

Sonic the Hedgehog 2 (World) (Beta) (Simon Wai) [Hack by Esrael v0.23] (~Sonic 2 Delta) is a fan modification based on a prototype build of the original Sega Genesis game from 1992. It offers a glimpse into the development process of Sonic Team's platformer, presenting an alternate version with different level layouts, unfinished zones, and mechanics that didn't make the final cut. This release was never officially published, but the ROM hack community has preserved and refined it for modern play.

You control Sonic, often accompanied by Tails, as you run, jump, and spin through vibrant, high-speed stages. The main goal remains collecting Chaos Emeralds and defeating Dr. Robotnik, but the level design here feels experimental, with alternate pathways and unfamiliar obstacles. Signature mechanics include the ability for Tails to carry Sonic briefly during flight, and some stages feature different enemy placements or missing graphical elements. The pacing is fast but occasionally uneven due to the unfinished nature of the content, and certain sections can feel more challenging or awkward than the retail version. Playing it gives a tangible sense of exploring a work in progress, full of curiosity and slight unpredictability.