TURBOWARP RECOMMENDED: https://turbowarp.org/1193251935 CONTROLS: Left and Right Arrows - Move Left/Right Up and Down Arrows - Lookup/Crouch A Key - Jump Enter or P Key - Start/Pause Space Key - Customizable Options Toggle W Key - Transform (Available only if Hidden Credits are enabled) STORY (from Sonic Retro): Somewhere in the ocean lies a mysterious island not found on any map, known by its inhabitants as South Island. The reason for it being absent is a simple, yet mysterious one: it does not have a fixed position, instead traveling through the seas on its own course. While the reason for this behavior is unknown, it is rumored that it may have something to do with the legendary gemstones known as the Chaos Emeralds. Though legend says they exist on the island, no one knows exactly where they are or how to get a hold of them. All they do know is of the incredible power they are said to contain, and how they can give energy to all living beings. Learning of the existence of the Chaos Emeralds, the mad genius Dr. Eggman sets himself on a quest to locate the emeralds for his own use, wanting to harness their power for his many mechanical creations. With the plan in motion, Eggman creates his base in a corner of the island, which he dubs the Scrap Brain Zone. However, he is aware that his evil plans will more than likely be interfered by Sonic the Hedgehog. Though not a native of the island, Sonic the Hedgehog would often find himself on its mystical shores, and more than once had he run into the evil doctor, foiling an untold number of schemes. Just as Eggman predicted, in no time at all does the blue hedgehog learn of the doctor's intentions, running at sonic speed to confront him. It doesn't take long for Sonic to realize that something is amiss, and is shocked to learn that Eggman has gone a step further with his evil intentions. Kidnapping the many animals living on the island, he has methodically been placing them in robot shells and using them to scour the island in search of the emeralds. Realizing that Eggman has turned Sonic's friends into his own personal mechanical army, Sonic wastes no time. Running across the island, he must not only stop Eggman's latest scheme and gather the Chaos Emeralds, but free his friends in the process. "Hurry! Sonic the Hedgehog - everyone is waiting for your help!"
6/23/2026 SONIC SCRATCH EXPO '26 BUILD IMPORTANT NOTICE: Build has been updated for Sonic Scratch Expo '26. This version of the project was last updated on 8/31/2025. It's that old because it was around that point that I started to realize how difficult it was to work with this engine. I have since restarted development with a whole new engine. The progress I have made on this "new" version will be revealed soon...hopefully. CREDITS: - Base Delta 3 Engine - Camera System - Level System - Object Save System + Background System - Object Converter System (not in-project) - Swinging Objects - Marble Zone Objects and Platform Code - Helpful Advice :-) Mr.Htuber and UnknownEXE - Super Sonic Sprites The Spriters Resource - Sprites SEGA Sonic Team Sonic Retro (Sonic Physics Guide, Game Notes) tcrf.net NOTES: - This build only features Green Hill Zone and Marble Zone Act 1, but other zones are accessible through Level Select (though VERY incomplete) - Some objects have not been added or fully implemented - Angle/slope detection is buggy - No pen has been used in this version of the project - No foreground elements yet - No animated chunks yet - Pop-in issues with camera and objects occur - Layer issues occur in Marble Zone Act 1 UPDATES: 6/29/2025 - "SSE '25 Build" > contains Green Hill Zone and most of its objects > Pop-in issues occur with camera and objects > Collision data is a work-in-progress > No animated chunks and no foreground elements > No pen mechanisms are included 7/1/2025 - > Fixed a bug with signpost spawning 7/2/2025 - > Fixed a bug when you get a life every 50,000 points > Fixed a bug where a checkpoint still saves your last time after you get a Time Over > Fixed a bug when milliseconds are enabled 7/5/2025 - > Fixed a bug when the player goes offscreen with fencing enabled 6/23/2026 - "SSE '26 Build" > Note: Build is from 8/31/2025, the latest version of Sonic 1 using Gen-Delta before development was completely overhauled due to difficulties with the engine > Platforms have been added (Credit to ) > Marble Zone Act 1 is fully playable, albeit without any badniks (Credit to ) > Marble-specific objects, such as crushers and blocks, have been added (Credit to ) > Gameplay sprites have been updated with improved colors > Added Marble Zone background for all three acts (Credit to ) > Added Scrap Brain Zone Act 3 Chunks FINAL WORDS: If you are experienced and interested in helping me make this project better, let me know by commenting on my profile page! THANK YOU FOR PLAYING! ~
