Genesis Plus Gx Wad -

It sounds like you’re referring to Genesis Plus GX — a popular open-source Sega Genesis/Mega Drive, Master System, Game Gear, and SG-1000 emulator — and specifically asking about a WAD file version of it.

When she launches it, the screen doesn’t show the usual Genesis boot ROM. Instead, a green diagnostic prompt appears: genesis plus gx wad

Convenience: The WAD installation allows for a cleaner Wii Menu experience. Once installed via a manager like Wii Mod Lite or Yet Another Wii Mod Manager, it operates just like an official virtual console title. It sounds like you’re referring to Genesis Plus

2.2 Genesis Plus GX WAD vs. Other Distributions

The standard distribution of Genesis Plus GX is a DOL file (executable) launched via the Homebrew Channel. A WAD version transforms the emulator into a standalone, bootable Wii channel. Once installed via a manager like Wii Mod

Genesis Plus GX WAD is a "forwarder channel" for the Nintendo Wii that allows you to launch the Genesis Plus GX emulator directly from the Wii System Menu. While the emulator itself is the engine, the WAD serves as the visual shortcut, making your homebrew setup feel more like a native console experience. Genesis Plus GX Overview

These guides walk through the installation process and showcase the emulator's features on the Wii: