Pepsi in Sonic 1 is a ROM hack of Sonic the Hedgehog by Unlimited Trees (a.k.a HorriblePerson on Sonic Retro). It is a parody hack of a lot of ROM hacks out there, which is why there are things such as horrible level "designs", generic palettes, and the usual character switch. This ROM hack features 6 full length zones (plus bonus stages), 3 (+1) playable characters, and many art edits and secrets!

A hack based on Sonic the hedgehog 2 made by snkenjoi Aperture Science's Portal Gun finds its way into Sonic 2.The portals in the game actually affect objects other than sonic - to the extent that you can kill an enemy with its own projectile if you fling it back at it.Credits:E-122-Psi - sonic's spritesheetflamewing - help with collision detectioniojnekns - portal spritesFraGag - testing

Red Hot Sonic 2 is a hack of Sonic the Hedgehog 2 (16-bit) by redhotsonic. It was his first hack.Started in early 2004, this hack featured two fan characters: Red Hot Sonic and Jet Pack Tails. Several versions were released (0.50, 0.60, 0.70, 0.80, and then finally 0.90). The hack started off bad (especially the palettes) but became more developed over time.

Sally Acorn in Sonic the Hedgehog (aka Sally in Sonic 1) is a fan-made ROM of the game Sonic the Hedgehog for the Sega Mega Drive/Genesis, with Princess Sally Acorn as a playable character in place of Sonic the Hedgehog.The game was modified by Sonic Retro member E-122-Psi, with additional programming and coding by other members including Snkenjoi,MarkeyJester, Aquaslash,Selbi and Hayate.

A hack made by Roebloz Based on Sonic 1Regular Credits:Roebloz: Hack idea, level design, main sprite editing, instrument editing, zone naming, main media stuff.TheLesha: Technical Stuff (Zone Order, Zone Names, Splash Screen Implementation, sprite implementation via HEX editing)The Game Apologist - Giving me the conviction to give Silver Sonic justice.Silver Sonic - For being a cute little Sonic robot!Graphic Credits:Roebloz: Making the player sprites out of Cancer Edition's spritesheet and vanilla S1 Sonic's sprites, recoloring most of the sprites to fit the palette, making said palette, making the ending, life icon title screen and signpost Silver Sonic art. (Also making the Green, Orange and Blue recolor of Mario)TheLesha: Implementation of all sprites into the ROM via HEX editing (Except for the player sprites)Cancer Edition: Making the original Silver Sonic spritesheet that was used as base for most player sprites.Dolphman: Custom Sonic Mega Drive-style Eggmobile sprites.MarkyJester, mrcat-pixel and Cinossu: Splash screen and SHC logoUnknown: Custom SEGA Letters, not included with spritesheet.Master Emerald Sprite - Mod.Gen project

Hellfire Saga By Hardline Team is a hack based on sonic 3 is part of sonic hacking contest 2021, please consider supporting the team if you like it. Sonic finds his realm transformed, merging with the demon realm to form a nightmarish scape littered with legions of hungry-for-blood demons. Help Sonic to escape from hell and return to his home world!DEMOGeneral credits:Narcologer - Project lead, programming, main game and story concept, some boss and enemy sprites, custom powerupTheBlad768 - Main programming, creating the HAGE engine, some boss and enemy sprites, cutscenes, blood, weather effects, SEGA and title screen implementation, sound driver modification.FoxConED - Hardline team leader, music creation, programming, sound driver modification.mrcat-pixel - Art direction, level design, tileset and background art, sprite art, writing help.VladislavSavvateev - Programming, HardLine screen implementation, sound driver modification, tool programming.AURORA☆FIELDS - AMPS sound driver, programming, moving lava and parallax engine implementation.Gerry Trevino - Composing the main theme.GENATAR_i - Music creation.Ralakimus - Programming, HUD implementation.Hotmilk - Writing.VAdaPEGA - Sprite art.Trickster - Sprite art.Sergey ESN - Sprite art.Nat the Porcupine - Sprite art.Sosocheck69 - Concept artist.ProjectFM - One of the bosses and its sprite art.cuberoot - Programming development tools.N-BAH - Programming development tools.SHooTeR - General help, programming development tools.Solareyn Eylinor - Directing cutscene animation.malamus - Testing and feedback.Vladikcomper - Programming, improved Kosinski, Nemesis alghorithms, Advanced Error Handler.Flamewing - Ultra DMA Queue, improved Kosinski Module alghorithm.Featuring enemies and bosses from:Castlevania (Bloodlines, Rondo of Blood, Dracula X, Symphony of Night, Super ~ 4, Java);Ghosts n Goblins (ARCADE), Ghouls n Ghosts, Super Ghouls n Ghosts;Kid Chameleon;The Legend of Zelda: A Link to the Past;Splatterhouse 2;Demon's Crest;Sparkster: Rocket Knight Adventures 2;Castle of Illusion Starring Mickey Mouse;GS Mikami,which have been edited by sprite artists to fit the game's artstyle where time permitted; additionally, featuring character sprites from:Shinbaloonba - Sonic;Gabriel_aka_Frag - Rouge;Skylights - Tikal;teamhedgehog - Honey;EchidKnux - Death,also edited where possible. (Please excuse the messy placeholders, we're working on it!)Featuring music from:Actraiser;Rusty;Castlevania (Super ~ 4, Portrait of Ruin, Symphony of the Night, Aria Of Sorrow)Elemental Master;Ultimate Mortal Kombat 3;Dragon's Fury;Gerry Trevino;Periphery,covered by our musicians.