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The Sonic 2 Beta Wiki

Origin | Downloads | Cheats | Comparisons | Prototype Zones | Music | Concept Art Sketches | Magazine Previews | Video Previews | Timeline | Lost Sprites and Tiles | Savestates | False Alarms | Summary | Sonic 2 Algorithms & Specs Patents


Sonic 2 "Simon Wai" Prototype (Also known as the Sonic 2 Beta)

Discovery Date: December 1998
Found by: Simon Wai
Download: here (info) (625 kB)

Wai proto.png

The first early prototype version of Sonic the Hedgehog 2 to be found, and has been the backbone of this site for years. This highly unfinished, and barely playable game requires a Sega Mega Drive/Genesis emulator to run it. Press A+Start to enter level select. You will need other cheat codes like debug mode to fully explore the zones, so read it up while you're downloading.

Sonic 2 "Nick Arcade" Prototype

Discovery Date: 7th November 2006
Found by: drx
Download: here (info) (519 kB)

Na proto.png

After almost 8 years of only having Simon Wai's beta, drx found the community another Sonic the Hedgehog 2 prototype. Though it's not fully confirmed, this build appears to be identical to the version featured in the show Nick Arcade. It's even earlier than Simon Wai's prototype, featuring only 5 playable zones. Press Up, Down, Down, Down, Down, Up, A+Start to enter level select.

The Sonic 2 "Betas"

Discovery Date: 23rd February 2008
Found by:drx

File:B4 proto.png

On February 23rd 2008, drx released six more betas to the community. These are much later prototypes than the Nick Arcade and Simon Wai builds, and cover the last minute changes leading up to the final release. Beta 4 is the oldest, Beta 8 is the newest.