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Proto:Sonic the Hedgehog 2 (Genesis)
This page details one or more prototype versions of Sonic the Hedgehog 2 (Genesis).
There are many interesting things in the prototypes of the Genesis Sonic the Hedgehog 2, most of which were sadly removed as development progressed.
| Nick Arcade Prototype|
Very early build using Sonic 1 resources. Named for being very similar to the build used on the game show Nick Arcade in 1992.
| Simon Wai Prototype|
Early build that's more fleshed out, but still very far from complete. Named after the person who discovered it, Simon Wai.
| Beta 4|
Dated September 18, 1992. Presumably the build seen in the instruction booklet, with the original title screen and 1/2-Player options. Hidden Palace and Wood Zone no longer exist.
| Beta 5|
Dated September 21, 1992. The first build with the final title screen, and the last without an Options menu.
| Beta 6|
Dated September 22, 1992. Now with Options menu!
| Beta 7|
Dated September 24, 1992 (09:26). First build with the final Level Select screen.
| Beta 8|
Dated September 24, 1992 (19:27). Very close to the final, with ending and credits finally implemented. Still not complete, though.
If Tails jumps and hits an enemy after Sonic dies, the score will continually increase until the fade-out. This happens because, while all Badniks are frozen and can't be destroyed when Sonic dies, Tails can keep moving, get stuck in an enemy, and continuously gain points – a bug that (as seen in the video at right) awards 1,452,800 points and nearly 30 extra lives.
This bug is mostly present in Beta 4 and above, but can be done in just about any prototype version. It was fixed in the final by having Tails immediately go into his flying animation when Sonic dies, but can still be done in the final version due to another bug.
When going up slopes with Tails' AI, if Tails does not successfully make it, its AI will walk back to a stop and then attempt to spin dash up the slope. If Sonic dies during this time, Tails will continue performing this action until the Spin Dash is released, which then puts him into the flying animation described previously. If you take Player 2's controller to control Tails after Sonic dies and before Tails' scripted action finishes, you will have full control of Tails until the game fades to black, allowing this bug to occur when Tails jumps into an enemy, racking up massive points and extra lives.