If you've ever wanted to make homebrew Sega Mega Drive games or play every ROM on an actual Mega Drive system, Chris McClelland shows you how it can be done.
In an extensive three part YouTube series, McClelland explains how the Mega Drive (known as the Genesis in the US) and its game cartridges work while giving you a tutorial on how to modify the system's components. When it's all set up, you can modify game cartridges to give yourself infinite lives like a Game Genie, or even develop your own custom homebrew games.
The best part: you can load up every single Sega Mega Drive game ever released onto a single SD card and play them all on the real-deal system with an actual Mega Drive controller. There's a full list of everything you need and the necessary code on McClelland's GitHub page. Everything can also be found in guide form here.