A great hack for Sonic the Hedgehog hack made by MarkeyJester features new enemies, layout, music,etc..Credits:3rd Act Layout - Gallium Grant.Gameplay Testers - iojnekns, snkenjoi, EditChrisBug finders - DAGarden, qiuu, Selbi, SonicVaan

A work in progress hack based on sonic the hedgehog made by Animemaster.This was meant to be a little side project to Sonic 1: Sonic CD Edition I was having problems so I starting something really small. I liked the idea, and ran with it.Robotnik has got a plan to go back in time, but not like in Sonic CD, further back. I feel like he's done this before though. It's a beta, so there are unfinished art and stuff.

Sonic 1: Bouncy Edition is a physics hack of Sonic the Hedgehog for the Sega Mega Drive/Genesis by Xenowhirl. Based on the gameplay of Within a Deep Forest, the hack has modified Sonic's actions so that he is constantly bouncing. Other additional features include a snap screen, new special stage controls and the ability to use GHZ bridges as trampolines.

Sonic 1 - Comet Edition v2.1 is a hack based on sonic 1 made by B. CasaisIt features a major focus in level design with a nice amount of secrets and alternate paths, some graphical and musical changes. It's my "second" attempt at hacking. •Zone Features• Green Hill ZoneNew music;New pallets;New background; Complete new layout.• Marble ZonePlace holder music (Scrap Brain);New background and title set;Complete new layout.• Spring Yard Zone - Experimental/UnfinishedComplete new layout for Act 1 only (experimental);New background;Pallet changes.The rest of the zones remains the same as the original game.• CreditsShitty Person: For S. Speedway Past - Sonic 1 SMPSGamma V: For Sonic 2 (SMS) - Boss (16-bit) SMPSRazor and Zenon and RedHotSonicSSRG and friends: Overall feedbackNeoFusionBoxGanacchii:

A Hack Based on Sonic 1 made By RoxurfaceSonic 1: Contemporary attempts to breath new life into the art, music, layouts, and abilities available in Sonic 1. Minor art changes have been made, mainly those found in the 1.1 version, and other minor details. The palettes have been updated to be more lush and vibrant, and each act has a variance of the original zone. The first act retains the original music, and the other two feature variations akin to Sonic 3 & K and Sonic Mania. The exception is Labyrinth Zone, which for now has the same palette and music across all three acts.Sonic can spindash, peel-out, and wall-jump. With six Chaos Emeralds, he can also transform into Super Sonic. (Though without the seventh emerald, the golden form is replaced by invincibility stars, and the level music continues to play.) To become Super, collect the emeralds and 50 rings and press "C" while in the air. You may also revert back to Sonic's normal form at any time by jumping and pressing "C" again. The form otherwise functions exactly as in Sonic 2. The level designs are left mostly faithful to the originals. However, there are now many new shortcuts and secret areas that can be found, especially when making use of Sonic's new abilities. There are plenty of ramps to peel-out off of, and many tight walls to ascend. Marble and Labyrinth have had the most drastic changes to encourage more of a flow rewarded to skilled play. You can even complete Labyrinth Act 2 without ever entering the water. I issue a challenge to all players: in each stage, there is a 1-Up monitor in a new location (the original placement of the 1-Up monitors has been removed or changed to a different power-up.) I challenge you to find the 1-Up monitor in every stage! Bonus points if you collect every 1-Up in a deathless run!This hack was made using Mercury's ReadySonic, so many of the bugfixes and features from that project are present.The bosses in the original game were already painfully easy, and now Sonic's new moves have the potential to make them laughable. To account for this, the good Doctor's Eggmobile now has more invincibility frames. This makes the boss fights more about rhythm and platforming than just wailing on the machine. This affects only a few bosses, mainly in the first half, but I believe it adds a new layer of depth to the bosses.

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 1: The Special Stages is a hack of Sonic 1 by SonicVaan. This hack removes standard Sonic gameplay and replaces it with the Special Stages which normally were only accessible by the Giant Rings at the end of each stage.The actual special stage layouts have been touched for every stage.This hack is actually on hold. Future releases are not to be expected.