Sega Genesis Hacks Guide
Genesis & Mega Drive Modding
This wiki is a practical guide to upgrading and modifying Sega's 16-bit console, known as the Genesis in North America and the Mega Drive almost everywhere else. The same hardware sold under both names, so most mods apply equally regardless of which badge sits on your unit.
The console shipped across three main revisions plus two famous add-ons: the Sega CD and the 32X. Each revision behaves a little differently when it comes to video quality, region, and physical cartridge fit, so knowing exactly which board you own is the first real step.
What this wiki covers
We walk through the upgrades the community values most: flashcarts for playing your library from an SD card, RGB output for a sharper picture, region mods for running imports, and physical tweaks like cartridge-slot widening. We also cover the Sega CD and 32X add-ons.
Some pages describe solder-free upgrades anyone can do, while others involve opening the console and using an iron. Every install page opens with a warning box and a clear phase-by-phase breakdown so you know what you are getting into before you start.
Read the Before you begin and Choosing a method pages first, then jump to whichever upgrade fits your goals and comfort level.