Mega Duck patch for Genesis 2 (Game Boy)

Genesis 2 (Game Boy game) patched to run on the Mega Duck

This is a romhack patch of Genesis 2 GB by User 0x7F so that it can run on the Mega Duck clone console. This patch is made available with permission from the author of the game.

Applying the Patch

In order to use this patch you need to first purchase the ROM file.

It should have md5 checksum fa2b11931da462c4d34095987c4a0264 for the ROM.

Once you have the ROM file you can use the online patcher (or any other patcher that supports UPS patches) at: https://www.romhacking.net/patch/

Running from a Flash Cart

The pico Duck Flash Cart by Zwenergy running the 1MB MD2 ROM firmware can be used to flash and run the patched ROM.
https://github.com/bbbbbr/picoDuck/tree/1MB_MD2_only
https://github.com/bbbbbr/picoDuck/releases/tag/1MB_MD2_only_v1.0

Changes

In addition to what was required for the game to run on the Mega Duck hardware, the following changes were also made:

• Minor MegaDuck text changes ;)
• Turned of High Score for MD2 rom format

Emulators

If an emulator is used to run the patched game then keep in mind that (at present) all known emulators for the Mega Duck do not emulate the audio hardware correctly and music will not sound right.

Tools Used

• Emulicious emulator (dissasembling, debugging)
• Super Junior SameDuck emulator (testing, development)
• RGBDS (assembler)
• MegaDuck.dev (MegaDuck technical docs)
• ImHex (hex editor, rummaging through the binary)