Sonic 1 – Under 500 is a ROM Hack that brings 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 changes and meet new powers like “S Monitor gives you 50 rings” and “Egghead Monitor works right”. This ROM Hack promises to have a new SMPS and new life counter HUD, 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 sprites
- Smooth palettes and removed delay for Special Stage
- Works in accurate genesis emulator like BlastEm
- Secret areas are acessible for Debug Mode only
- New SMPS tunes to be listened in Sound Test
- Sonic 1 Prototype Drums are now included
- Extended Debug Mode with Mercury Fix
- New sprite for Sonic and monitor
- New Sonic 2 Level Select Design
- Few changes with Special Stage
- Vladikcomper Error Handler
- Speed Cap is now removed
CRC-32: f9394e97
SHA-1: 6ddb7de1e17e7f6cdb88927bd906352030daa194
RetroKoH - Some few assistance in code
DeltaW - Sonic Follow Camera Die Guide
Hame - Green Hill Zone Camera Fix
Mercury - Debug Mode Fix Item Placement
Esrael - Sonic 2 Level Select in Sonic 1
Selbi - Sonic 1 Text Code Generator
Kilo - Fixing Debug Mode Position
SomeUser214 - Guide of Restoring Sonic 1 BETA Drums
MarkeyJester - SHC Splash Screen (Disassembly by Naoto_NTP)
Dolphman - Composite Sonic Genesis Sprite
MunchJrGames - Mania Eggman Signpost Style
PeanutNoceda - Life Counter HUD
Louplayer - New Monitor Art in Mania
Streets of Rage 2 - Title Screen Font
FraGag - Fixing Spike Bug Guide
Puto and Nineko - Fixing/Disabling Speed Cap
chobocoda - Extending Title Screen Delay
SSRG and Sonic Retro - Guides and Code Assistance
SoullessSentinel - Sonic 1 Level Select ASCII Text
Cinossu, Nineko, MDTravis, DarkShamilKhan, ConiNight, JX - Music
Nineko - Implementing Eggman Monitor Functional
You - The Player
Most of the files you're about to download need to be applied to your game. Here is a list of utilities that allow you to do this:
- Online Patcher: Marc Roblero's online patcher. Works with many different file types.
- Floating IPS: NWell-known patcher for applying IPS and BPS files.
- Delta Patcher: Used to apply xDelta files.
- More Patchers
On most files, you can also press “Patch It”, to apply the patch without downloading the file.
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