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Sonic 2 Long Version (which is released alongside Sonic 2 & Knuckles Long Version) is a more complete version of Sonic 2, which makes it somewhat similar to Sonic 2 Delta. This hack features four levels originally scrapped during Sonic 2's development. No levels have been changed, only added. This hack was written in hex, without the aid of any special hacking programs, because the creator uses a Mac, and no hacking tools had been released on that platform at the time of development.

Sonic Winter Adventures

Amy Rose in Sonic the Hedgehog 2 (aka Amy in Sonic 2) is a character swap hack Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis, with character Amy Rose as playable character in place of Sonic the Hedgehog. The game's sprites (modified from Sonic CD) use Amy's initial design prior to Sonic Adventure.

The game was modified by Sonic Retro member E-122-Psi, with additional programming and coding by other members including MarkeyJester, MainMemory, FraGag, Selbi and Hayate.

Amy Rose in Sonic the Hedgehog 2 (aka Amy in Sonic 2) is a character swap hack Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis, with character Amy Rose as playable character in place of Sonic the Hedgehog. The game's sprites (modified from Sonic CD) use Amy's initial design prior to Sonic Adventure.

The game was modified by Sonic Retro member E-122-Psi, with additional programming and coding by other members including MarkeyJester, MainMemory, FraGag, Selbi and Hayate.

the hack has only complicated bosses.
It's not finished is a beta version. In the future, this version will be much better.
And much more.

This hack made by TheBlad

Sonic the Hedgehog 2: Pink Edition is a character swap hack of Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis, with Amy Rose and Cream the Rabbit replacing Sonic the Hedgehog and Tails respectively. Amy Rose's sprites are designed after her modern look. Amy Rose with classic-style sprites is available to play in the Amy Rose in Sonic the Hedgehog 2 hack.

The game was modified by Sonic Retro Member E-122-Psi, with additional programming and coding by other members including MarkeyJester, MainMemory, FraGag, Selbi, and Hayate. Most programming unique from Amy In Sonic 2 such as Cream the Rabbit's gameplay was implemented by Flamewing.

Sonic 1 With Fries is a hack of Sonic the Hedgehog for the Sega Mega Drive/Genesis by Team Fries. The last version was released in October 2009.

Sonic 1 Special Version is Sonic the Hedgehog hack made by EditChris.

This hack add new level layouts, New Art, A lot of ASM changes/add, MegaPCM driver improved and a lot of music added.

Sonic ERaZor is a hack of Sonic the Hedgehog (16-bit) created by Selbi. This hack is unlike many other hacks, featuring a heavy in-game story line, unique challenges, and never seen before gameplay mechanics. These elements are often somehow related to explosions, which is why this hack is sometimes called "What if Michael Bay directed Sonic 1".

When first released back in early 2010, Selbi stated that this hack has no goal whatsoever and any ideas he came up with just went in. Today's releases have a lot more structure and thought out gameplay elements. The difficulty has been steadily decreased between the different versions, mostly due to some negative feedback regarding the first releases, although they all have an above average difficulty, and is therefore regarded by many as quite interesting and challenging, if not frustrating.

A notable aspect about this hack is that it contains many cutscenes, chapter screens and story screens. The game's first scene after the title screen is entirely a cutscene.

Sonic 3 and Amy Rose is a fan-made hack of the game Sonic 3 & Knuckles for the Sega Mega Drive/Genesis, with character Amy Rose as playable character in place of Sonic the Hedgehog. The games' sprites (modified from Sonic CD) use Amy's initial design prior to Sonic Adventure.

The game was modified by Sonic Retro member E-122-Psi with additional programming and coding by other members including Tiddles, and additional sprite work by ChelseaCatGirl and MotorRoach.

Sonic 2: Advanced Edit is a Sonic 2 hack created by rika_chou. The latest release features 3 new levels. Other (incomplete) levels can be accessed by using the level select menu. As of release 3, Sonic 2: Advanced Edit has officially been discontinued.

Sonic 3 Complete is a hack of Sonic 3 & Knuckles which aims to provide a much improved variant of the original game, with many new options and features, without straying from the original levels or gameplay. The inclusion of separate modes for Sonic 3, Sonic & Knuckles and Blue Sphere also make this a close cousin of the PC compilation Sonic & Knuckles Collection, albeit designed for the original 16-bit hardware.

Sonic the Hedgehog 2 Heroes

Sonic And The Mystic Gems (previously known as Sonic 1 Harder Levels) is a hack made by Eduardo Knuckles and his team Harder Project of Sonic the Hedgehogon the Sega Mega Drive/Genesis. The hack adds to the game a lot of new features such as the three known main playable characters, a checkpoint monitor, customizable level music playlist, a sweet and clear save data select menu, difficulty selection, a unique music menu and some other additional menus and screens which gives to the game a completely new gameplay experience.

Sonic 1 Remastered is a hack of Sonic the Hedgehog (16-bit) for the Sega Mega Drive/Genesis by Puto. Unlike most other hacks, the officially released version 1.1 isn't a level art/palette/layout hack as much as an "additional features" hack done in ASM. One of the major additions to the game is added with the choice of using Sonic or Tails throughout the game (selecting a character is done at the title screen). There also exists a version 2 hack which was leaked without Puto's permission, although he later gave permission to upload it onto the wiki.

Ordinary Sonic

Sonic the Hedgehog refers to the Sonic the Hedgehog video game series released by Sega, and starring its eponymous mascot, the video game character Sonic the Hedgehog. The video game series is the primary product in a multimedia franchise, including products in a wide range of media.

Sonic the Hedgehog refers to the Sonic the Hedgehog video game series released by Sega, and starring its eponymous mascot, the video game character Sonic the Hedgehog. The video game series is the primary product in a multimedia franchise, including products in a wide range of media.