Sonic 2 Simon Wai Prototype Sega Genesis Video Game Cart

The Sonic the Hedgehog 2 "Simon Wai" prototype is a prototype build of Sonic the Hedgehog 2 for the Sega Mega Drive. It is a relatively early build of the game, thought to have been created around the middle of 1992.

This particular prototype is named after Simon Wai, who found the ROM on a Chinese website and subsequently brought it to the attention of the Western Sonic the Hedgehog fan community. It was the first prototype to be found of Sonic 2, and for many years was simply referred to as "Sonic 2 Beta".

The Simon Wai prototype is more advanced than the earlier "Nick Arcade" prototype, though is still very much incomplete. Only four Zones can be played during normal gameplay; Aquatic Ruin Zone, Chemical Plant Zone, Hill Top Zone and Emerald Hill Zone (in that order). A further nine can be accessed through a level select code, though none of these Zones can be finished, and three are entirely empty stages.

Game has been tested on an original Sega Genesis model 1 and works flawlessly.

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