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    Correction.
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    Author profile should be Jon Najar (https://www.romhacking.net/community/519/). The MIJET branding was previously retired by request of John. His profile and all previous MIJET items are under his name now.
  • Hacks
    Author profile should be Jon Najar (https://www.romhacking.net/community/519/). The MIJET branding was previously retired by request of John. His profile and all previous MIJET items are under his name now.
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    Tetris Battle Spin Off is Tetris Battle Gaiden's alternate name, used in the English translation patch.

Sonic 2 Delta

Hack of Sonic the Hedgehog 2

Description:

Sonic 2 Delta is one of those rare hacks that is actually better than the original game. The original zones, with a few exceptions, are untouched; this hack restores zones that were cut during development.

While two of these zones (Wood and Hidden Palace) are available in the prototype ROM floating around the net, they’re in an unfinished and nearly unplayable state. One zone, Dust Hill, was restored based on a single mock-up screenshot; Winter Hill was based on an interview. Even Casino Night, which received a makeover since its beta state, has been restored to its former (very pink) look. The only zone that is incomplete in this hack is Genocide City, which is merely Chemical Plant with a different background and palette. Enemies from early revisions have also been restored

In addition to restoring cut zones, the hack adds a few new features: The ring counter now shows how many rings remain in a zone, the level select menu has been updated to allow access to the new zones, some Sonic 3 graphics have been ported, and even Knuckles has been ported from Sonic & Knuckles!

This is one of those hacks that simply must be played, its only flaws are the somewhat amateur-feeling level designs for the new zones and the fact it does not work on the real Genesis hardware.

The latest version is based off the revision 02 which was extracted from the Sonic Compilation for Sega Genesis. The ROM is called Sonic the Hedgehog 2 (W) (REVSC02). The ROM should be in BIN format. The patch is in xdelta format due to shifted data resulting in IPS patches containing original code.

Levels

  • Green Hill Zone: Sonic the Hedgehog level.
  • Emerald Hill Zone: Prototype layout elements and Coconut monkey enemies are replaced with the scrapped Snail enemies.
  • Winter Hill Zone: Scrapped level.
  • Wood Zone: The graphics are similar to what is seen in the Simon Wai prototype. Scrapped level.
  • Dust Hill Zone: Graphics similar to those featured in the mockup screenshot that was featured in many magazines. Scrapped level.
  • Chemical Plant Zone: Small minor alterations were made, such as the loops having slanted corners as seen in prototype media.
  • Labyrinth Zone: Sonic the Hedgehog level.
  • Neo Green Hill Zone: Prototype name, and music.
  • Star Light Zone: Sonic the Hedgehog level.
  • Casino Night Zone: Redesigned to look like the prototype level which had lots of pink.
  • Marble Zone: Sonic the Hedgehog level.
  • Hill Top Zone
  • Spring Yard Zone: Sonic the Hedgehog level.
  • Mystic Cave Zone
  • Hidden Palace Zone: Graphics and layout are the same as in the Nick Arcade prototype. Scrapped level
  • Oil Ocean Zone: Redesigned to look like the prototype. Features ride-able balls which were found in the betas.
  • Metropolis Zone
  • Genocide City Zone: Scrapped level.
  • Scrap Brain Sonic the Hedgehog level.
  • Final Zone: Sonic the Hedgehog level.
  • Sky Fortress Zone
  • Sky Chase Zone
  • Death Egg Zone: Three rings added to the beginning of the level.

V.25

  • Objects now uses Sonic 3/K Style Status Table ($4A size).
  • Level layouts uses Y indexed like Sonic 3/K. (Some improvements on tiles loading).
  • Level Select Menu now Has separated pages for Sonic 1 and Sonic 2 Levels.
  • Fixed some bugs from previous version, like rotating pallete for Sonic in Sonic 1 Special Stage.
  • All objects was manually edited to new SST.
  • Improved some code (ex: Centisecond now uses a table, previous versions uses divs).

ROM / ISO Information:

  • No-Intro Name: Sonic The Hedgehog 2 (World) (Rev00)
  • CRC32: 24AB4C3A
  • MD5: 8E2C29A1E65111FE2078359E685E7943
  • SHA-1: 14DD06FC3AA19A59A818EA1F6DE150C9061B14D4

Links:

Screenshots:


Credits:

Credits
ContributorType of contributionListed credit
EsraelHacking

User Review Information

Great Hack With One Big Bug

Reviewed By: metanite64 on 12 Feb 2020

This is an excellent hack, as stated by the other reviews. However, once you collect all the chaos emeralds, it softlocks with a weird message. Sucks that you can’t collect all of them, but otherwise the game is very cool.

Version 0.25a Recommended - Yes

User Reviews
HeadlineAuthorDateVersionRecommended
Good intentions but the new levels are HORRIBLEMarcos Moutta01 Oct 20200.25aNo
Ideas are interestingdiablo66620 Jun 20200.25aYes
Great Hack With One Big Bugmetanite6412 Feb 20200.25aYes
Makes the original obsolete.Ar8temis00829 Sep 20170.25aYes
Use of prototype stuff is awesome!MathUser292908 Jun 20160.24aYes