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Sonic the Hedgehog 2 (Nick Arcade prototype)

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Revision as of 13:52, 8 November 2006 by Hivebrain (talk | contribs)
Title screen, same as in Sonic 2 Beta

The Sonic The Hedgehog 2 Early Prototype, released to the public on Nov. 7, 2006, is a prototype of Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis, which features extremely unfinished zones. This cart, seen in two 1992 episodes of Nick Arcade, predates the more famous Sonic 2 Beta. It was found and sold to drx in cartridge form for $1500 via a community effort.

In this version, only one zone can be normally played : Emerald Hill Zone. The rest of the Zones can be played only through a Level Select code. The level select screen is completely identical to Sonic 1's, and even contains the original Green Hill Zone.

Download.svg Download Sonic the Hedgehog 2 (Nick Arcade prototype)
File: Sonic_The_Hedgehog_2_(Early_prototype)_(dumped_by_hidden-palace.org).bin ("Sonic_The_Hedgehog_2_(Early_prototype)_(dumped_by_hidden-palace.org).bin" does not exist) (info)
Current version: only version

Various Differences

  • If Sonic runs into a wall with a high velocity, he will bounce back off of the wall. This feature was ultimately canned, but it uses unused sprites that remained in the later beta.
  • Green Hill Zone and Labyrinth Zone are both included in the game, but have heavily corrupted tiles.
    • Labyrinth also lacks collision detection and is therefore unplayable, a la Genocide City Zone.
    • Green Hill has collision detection, albeit it's very glitchy, detecting hills that don't exist, among other things.
  • Hidden Palace Act 2 has some leftover object placement from Green Hill Zone Act 2.
    • There is a third act, as well, which has water that constantly rises and falls.
  • Each Zone uses music from Sonic 1, further proving that Sonic 2 was built off of Sonic 1.

Art Differences

  • Sonic and Tails are in different symmetrical designs on the end signpost
  • Chemical Plant Zone uses a purple-pink accent in the background instead of olive green; buildings are also much lower
  • Seesaws similar to that in the final Hill Top Zone can be seen in Emerald Hill's object debug

Levels

Cheat Codes

  • Level Select: At the title screen, hit Up, Down, Down, Down, Down, Up, Start.
  • Debug Mode: At the title screen, hit C,C,C,C, Up, Down, Down, Down, Down, Up, A+Start.
  • Level Select with Debug Mode: At the title screen, hit C,C,C,C, Up, Down, Down, Down, Down, Up, A+Start, wait for demo to start, then Up, Down, Down, Down, Down, Up, A+Start.

Physical Cartridge

(from drx's Hidden Palace)

  • Front of cartridge with holographic "Sonic 2" label

  • Front of cartridge without cover

  • Back of cartridge without cover

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