Team Overload presents, Sonic 1 - Warped World! This hack has undergone a quite a lot of changes since last year, including brand new level layouts, a lot of new music, and some other really cool features that you'll see in game! This year's entry only has 3 playable levels so far, but after completing the demo, you will gain access to the level select, where you can see what is in store for future releases!Story:After the events of Sonic 3 and Knuckles, Sonic lands back on Mobius. But because of his extended use of Super Sonic, he has lost his abilities. The Tornado lands on an unknown area so Sonic goes and explores. He comes across a whole lot of badniks and thinks straight away that Eggman had crashed there. Eggman, who barely made it, set up shop in an abandoned factory and built "Robotic Empire". Sonic, on the other side of Chaos Island, needs to make it through the six zones to destroy the Chaos Extraction Engine in Robotic Empire, and regain some of his lost abilities!Credits:A-S-H - Project leader, main music, main art, level layouts for POZ1, CSZ1, HTZ1FireRat - Sound TestKOOL-ZPOT - Super Peel-OutCaveQuest - POZ3 level layoutMopeDude - HTZ2 level layoutLordXernom - Original Level Select musicEduardo Knux - Labyrinth (8-Bit) music portTeam Overload - Beta-testing, help, suggestions and supportSSRG and Sonic Retro - Various guides and general help

Sonic 1 and 2 is a hack of Sonic the Hedgehog 2 for the Sega Genesis by ColinC10, submitted as his entry for the 2010 Sonic the Hedgehog Hacking Contest. In addition to all Zones usually featured in Sonic the Hedgehog 2, this hack first features all Zones from Sonic the Hedgehog (16-bit), which have been ported, resulting in a continuous game experience from Green Hill Zone to Death Egg Zone. Both games' different kinds of Special Stages are available in all regular acts, and they are accessed through their usual method (Giant Rings for Sonic 1's, star post checkpoints for Sonic 2's). The player must beat all special stages from each game, thus collecting 13 Chaos Emeralds, in order to obtain Super Sonic.

Sonic 1 - Back to South Island is a Sonic 1 hack made by HyperSonic16.This hack includes new audio, new stage/special stage layouts, new sprites, SPINDASH!!!!!(of course a spindash XD), New level art, and a bunch of badniks(Thanks Robuttnik!) You all are probably expecting a story, so here it is, nice and sweet:Story:Its the Christmas season, and everyone is doing their thing. Tails and knuckles go off to celebrate Christmas on Angel Island. While this happens, Sonic decides to go back to South Island (hence the name of the hack), to celebrate and check up on the flickys. Eggman, strangely had a similar idea, but he plans to robotize the flickys, and rebuild his base. When Sonic arrives, he finds a bunch of badniks, and he immediately knows that Eggman is there. So sonic, being the hero he is, he travels out to stop eggmans plans.

Sonic 1 Definitive is a hack named by RadiantNexus Team, which seeks to reimagine Sonic 1 by rearranging levels. remixing music, adding features from future games, and readding scrapped ideas in new and interesting ways.Major features:3 acts of reimagined level design, including one act that has yet to be fully reimagined in any other hack.A miniboss.Massive art overhaul all over the place.Music made by ProjectFM and MechaKnuckles.Menus!A custom splash screen.There's been massive engine overhauls as well, including the Sonic 3 level layout format for massive levels, and the Sonic 3 object manager to go alongside this.

Sonic 1 Dragon Edition is is a modification of Sonic 1 made by DragonWolfLeo that focuses on original art and music to make brand new zones, along with other changes to enhance gameplay.

Sonic 1 Easy mode is port of Sonic 1's Easy mode from the Sega Saturn game Sonic Jam. Easy mode uses completely different level layouts. The level order is also different and some levels are omitted completely (but are still playable using level select).

Sonic 1 Flash Flood is a ROM hack of Sonic the Hedghog that features new palette, audio, zone layout and special stage modifications, in addition to new gameplay mechanics. Flood waters rise and recede at random all over the island, significantly changing how the island is navigated. Can you make it through?Features:Level Design - In addition to the rain effect and water palettes, level layouts are tweaked to account for water physics.Marble Zone has altered lava physics, and Acts 2 and 3 have new shortcuts.Being entirely underground, Labyrinth Zone has been affected a bit...differently by the change in weather.Goggles Monitors - These take the place of air bubbles, and are thus unlimited. Use as many as you need!Badnik Behavior - The rain and flooding is even affecting Eggman's robots and hazards, causing them to malfunction! Some are even enhanced by the chaotic weather. Strangely, most fire-related hazards (such as flamethrowers and fireballs) remain unaffected, defying all logic.Special Stages - New special stage gameplay style, with art and music changes. Get Yellow Rings!Water Physics - Some general quality of life improvements to the water physics, and bug fixes are included here (with a few exceptions, for gameplay reasons).Level Select - Available upon pressing start, no code required. Feel free to check out any zone or special stage at your leisure.Known Bugs:Minor graphical bug in the special stage background, and on the results screen.In the Special Stages, blocks at the edge of the screen being loaded in flicker, due to the amount of objects.Level art mapping glitches crop up on rare occasion.Labyrinth and Scrap Brain's palette cycles are bit buggy at the moment.There are a couple of lingering walk-jump bugs here and therePlanned FeaturesImproved object optimizationImporting Sonic 2-3's child sprite systemUnderwater sound/music modeEven more environmental effects.More significant changes to bosses, Final Boss, etc.