Sonic 1: Reverse Curse is a hack based on Sonic 1 made by Campbellsonic Story:Sonic the Hedgehog has been cursed! Now, when he collects rings, his rings counter counts DOWN instead of up! And if he collects a ring when he has a counter of 0, it's lights out. Sonic 1 never seemed so... Intimidating.CreditsMain programming, modifications, ideas, and general everything except for stuff listed belowCampbellsonicMusicvladikcomper - Ported music used in GHZ3, MZ2, SYZ3, LZ2, LZ3, SLZ3, and SBZ2 (I got them from S1 Hacking Studio; and no, I didn't use that to make this hack, just the music)nineko - SLZ2 music (his port of Sky High Zone from Sonic 2 8-bit)ValleyBell - Created S3K to S1 SMPS Converter, which I used to port the music used in GHZ2, MZ3, SYZ2, SBZ1, all Boss acts, and Speed Shoes.Tutorials usedAdd Spin Dash - By Lightning, Puto, shobiz, and MercuryPlay Different Songs on Different Acts - By ninekoPort the REV01 Background Effects - By jman2050How to Add one more Act in Sonic 1 - By Eduardo KnucklesChange Spike behavior in Sonic 1 - By FraGagFix the Walk-Jump Bug in Sonic 1 - By Cinossu and MercuryProbably some others I forgot, so if you see anything that you think was from a tutorial, tell me.Utilities usedSonED2 - By StealthSonMapEd - By XenowhirlSpecial thanksGreen Snake, flamewing, MainMemory, and Clownacy for pointing me in the right direction on porting Sonic's S3 spritesI had no idea what a DMA queue was, silly me

Sonic 2: The Alternate Sprites is a Sonic the Hedgehog 2 ROM Hack which changes some of Sonic's and Tails' sprites, including Super Sonic (however with Super Sonic there is a glitch, which causes crashing after falling from a spring). Credits: The One Musaab - Spriter, Implementing Sprites

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 1 Pixel Perfect is a ROM hack of Sonic the Hedgehog for the Sega Mega Drive / Genesis by JcFerggy and NovaWizard. The hack features new extended layouts and art, custom loops and tubes, dynamic palettes for the acts, and a complete new Green Hill Zone layout (with edited boss) as of the first beta release.