Sonic the Hedgehog Thrash is a ROM hack of Sonic the Hedgehog 2 by DalekSam, though it was originally a hack of Sonic 1. It also uses the Sonic 2 Clone Driver.You can also play as Knuckles, credit given to Spanner for the Knuckles object among other things. Honestly, I tried doing it myself but I failed, hard.As of August 2013, the project has since been rebooted from scratch.

Sonic the Hedgehog: Isle of Magnetic Artifacts is a sonic hack made By Neo Team Kyukyokuis a hack which aims to overhaul Sonic 1 using a Japanese-inspired aesthetic. The main feature of this demo is Blossom Gardens Zone, the resting area of the isolated, star-god worshipping Kuratranos tribe. BGZ is a fast-paced experience littered with swift-acting enemies, height-granting gimmicks, driving music, and advanced graphical effects. This new zone can be traversed with three playable characters: Sonic the Hedgehog, Miles "Tails" Prower, and Knuckles the Echidna. Sonic, in particular, features a set of unique sprites, the dropdash ability, and a new companion: Abbey the Flicky. Abbey can pick up nearby rings and circle potential targets for Sonic, including hidden monitors.Neo Team Kyukyoku MembersAngelKOR64: Character programmingChron D: Music arrangementDeltaWooloo: Level layouts, music arrangement, object ports, programming, sound effectsDaxKatter: Music arrangementDio-ZX: Character art, object artDrag109: Level artfuzzy: Level art, programmingiced t: Level art, object artInferno: Level layoutsInktitious: Level artJerry: Level layoutsKatKuriN: Level artKGL: Level layoutsKurk: Team Leader, level layouts, music arrangement, music compositionManiacShard: Object artNaotoNTP: Object artProjectFM: Creative direction, level art, music arrangement, music composition, programming, story planningRaendom: ProgrammingRivet: Programmingtwo^: Concept artyami: Level layouts, music compositionFormer MembersAmzroSevca: Concept art, story planningGemini0: Former team leader, general art, level layouts, programmingjrm1007: Concepts, object artHaz Rabbit: Concept art, programminglavagaming1: ProgrammingNotQuiteHere: Music arrangementpoly: Logo, music arrangementMr. Gandy: Character artXGSOAP: Character artPlaytestersAccelBladeOfChaosCertainly GlitchyCosmic EternityDaxKatterfengishGGK912Hooded EdgeKCEXEKNIJohnMattyMeara BlanchetteMCTravisYTProfessor RendererPXSleekflash-16Sr ParadoxosoapyyTheInvisibleSunUnusualSeekerResourcesAsuharaMoon: Wind-Up Koi spritesAURORA☆FIELDS: SMPS2ASM and AMPSCartoonsAnimate22: Tails and Knuckles spritesCuckyDev: GHZ ball baseflamewing - Ultra DMA Queue + optimized Kosinski (improved by vladikcomper and MarkeyJester) and Enigma decompression codeLone Devil: Metal Sonic spritesMainMemory: SonLVL and Drop Dash programming guideMarkeyJester: DualPCM and sound testMikel Nash: Sonic 3-style super sonic spritesObserver: Sprite ripsShibaMayo: ShibaSaturn spritessnkenjoi: Flex 2The Eighth Bit: Space Queens MIDITheOneMusaab: Sonic 2: The Alternative Spritestildearrow: FurnaceTeck: Super Mario Land - Ending Theme MIDIvladikcomper - optimized Nemesis decompression codeValleyBell: mid2smps, SMPS Converter, SMPS Research PackVladislavSavvateev: DMF2AMPSAssets From:Capcom no Quiz Tonosama no YabouCave StoryFreedom PlanetHigh Seas HavocMega Man SeriesMichael Jackson's MoonwalkerRistarSangokushi Retsuden: Ransei no EiyuutachiShinobi IIISonic SeriesTouhou Project Series

Sonic the Trollface is my Sonic the Hedgehog hack. I've been working on it for about a year now, on and off. I started it on a Windows XP Virtual Machine on my iMac, until I finally sorted out my computer. The demo started as a mini hack, where I tried to make the game as difficult as possible by changing mechanics. I'm pleased to say it's nothing like that anymore, and is a lot more forgiving (though you most likely won't be speeding through the stages, unless you are Razor and Zenon - then you will be :P). The goal of this hack is to provide a fun twist on a tired formula. I won't give away some of the edits, but they are pretty cool. It does make it a bit difficult, but I believe in you! You can win the game! Rather than trying to speed through stages and rack up rings, instead you want to try and speedrun the tricky maneuvers in the stages. You've seen hacks that spam enemies, and this isn't one of them. Difficulty should come in the mechanics, not by having too many dick moves in the levels.

Sonic Zeta Overdrive is a hack of Sonic the Hedgehog 2 for the Sega Mega Drive by Mikel. Plans as of now include adding the Centisecond timer.

Sonic: South Island Warped is a currently in progress hack of Sonic the Hedgehog. It's main point of interest is the return of the time travel mechanic from Sonic CD, along with a few other new features added to set it apart from the original Sonic 1. Zones are split into four acts each; three main acts and and a boss act at the end. Sonic is capable of traveling to the past or the future of the zone he's currently in via the signposts hidden in each of the levels. Each act, sans act four, has a robot generator that, when destroyed in the past, will remove all badniks for the rest of the act and also create a good future for that act. Destroying all three generators for a zone will remove Eggman's influence in the fourth act, which always takes place in the future.Time Stones also return, collectible alongside the Chaos Emeralds. One Time Stone will be hidden in each zone, and it will only be obtainable within the future of that zone. If attempting to retrieve the Time Stone in the bad future, Sonic will have to face off with one of Eggman's machines. If in the good future, the Time Stone will be unguarded and ready to be collected. The fourth act of a zone contains no generators, Time Stones, or signposts, only a boss fight against either Eggman or Metal Sonic. The Chaos Emeralds will be obtained during these boss fights, usually right after the boss is defeated, but you may also be able to reach it before the boss does, preventing it from making the fight more difficult.As of now, this is just a demo of GHZ, which even on it's own is still in need of much work. Honestly there's a lot I couldn't get around to doing just yet, but I still wanted to give everyone a sample of what I'm making. More than anything, I just hope you all enjoy what you play. Everything in this is release was done by me with the exception of the sound driver and the one original song port done for this hack. Both of those were by Varion Icaria who I can't thank enough for helping out. Also have to give a thanks to the many users of both Sonic Retro and SSRG who made all of the informative guides and tutorials hosted on both sites.

A Hack based on Sonic the Hedgehog 3, Eggman plans to conquer the Mobius and rule the entire planet.To fulfill his evil scheme, the villain has created his most dangerous invention yet, the Egg-Virtualizer.With the help of his evil machine, Eggman attempts to virtualize the Mobius and become its only powerful ruler. He uses the Chaos Emeralds to power the machine, but things went not as he planned.Shortly after its activation, the machine broke, dispersing the emeralds' shreds all over the virtualized Mobius.Help Sonic to collect all the emeralds once again to destroy the machine and restore the planet!This is A DEMO VERSION CREDITS!Hack Idea:Ladego TeamProgramming:- EgorTF- TheBlad768- SHooTeR- VladislavSavvateev- VladikComperMusic Compositing:- EgorTF- Ivan YOSMPS Porting:- EgorTFLevel Creating:- Dr.RobotnikGraphics:- SHooTeR- Mr.Cat- EgorTFBosses:- TheBlad768Beta Testing:- Razor- Vladikcomper- Abyssal LeopardSpecial Thanks:- Abyssal Leopard- Solareyn