Sonic 1 - Under 500

• rom : yes
• licensing : unlicensed
• style : Action > Platformer
• code : sonic1under500
• Date(s) : 2025
• Tag(s) : Improvement, Hack of Sonic the Hedgehog
• Type(s) : hack
• By(s) : Mildanner

Hack of Sonic the Hedgehog

Data retrieved from romhacking.net

• ↪ https://www.romhacking.net/hacks/9087/
• hack of : Hack of Sonic the Hedgehog
• by : Mildanner
• category : Improvement
• platform : GEN
• patching information : No Special Requirements
• genre : Action > Platformer
• version : 1.2.1b
• release date : 09 October 2025
• downloads : 560

Sonic 1 - Under 500 is a ROM hack that have Extended Debug Mode, Fixed Spike Bug and Revised Gameplay. Sonic was in a Under 500 World due to Dr. Robotnik send him to that world, also the Under 500 World is a way that Sonic can confront alternate random gimmicks and meet new powers like “S Monitor gives you 50 rings” and “Egghead Monitor works right”. This ROM hack promises to have a new music tunes and minor improvement art changes, also in Under 500 World. Sonic decides to try survival on blue lava on Marble Zone, Labyrinth Zone is now a Misty Maze for Blue Water Level. Includes clean water palette for levels.This hack also contains:Improved stuff like sonic spritesSmooth palettes and removed delay for Special StageWorks in accurate genesis emulator like BlastEmSecret areas are acessible for Debug Mode onlyNew SMPS tunes to be listened in Sound TestSonic 1 Prototype Drums are now includedExtended Debug Mode with Mercury FixNew sprite for Sonic and monitorNew Sonic 2 Level Select DesignFew changes with Special StageVladikcomper Error HandlerMega PCM 2 (Advanced DAC Driver)Speed Cap is now removed

Screenshots