The following is a prototype of Ultimate Muscle: The Kinnikuman Legacy for the Game Boy Advance, developed by Bandai and Banpresto. The front of the cartridge lists the build date as being April 29th, 2003 (predating it’s retail release by a month or so).


  • The differences within this build are currently unknown. If you happen to know the game well and know the differences between the retail release and this prototype, please let us know!


Screenshot Screenshot Screenshot

ROM Information

----| File Data |--------------------------------------------------
System:             Nintendo - Game Boy Advance       
File:               UMUSCLE_AK2E01.gba
BitSize:            128 Mbit
Size (Bytes):       16777216
CRC32:              65E2295B
MD5:                904DAA87E547A1C9FB3DFFF4C83366C1
SHA1:               314FE99854C8C3AB8786B633F4A20AFBA835D696
SHA256:             655414C6EBA09CE3CF384EB019B1BE25113833570F484650E4EE6287FE45BDD2
----| Header Data |------------------------------------------------
ROM Entry Point:    EA00002E
Logo Code:          Ok
Title:              UMUSCLE     
Serial:             AK2E (USA)
Maker Code:         B2 (Bandai)
Fixed Value:        0x96 (Ok)
Unit Code:          0x00
Device Code:        0x00
Reserved 1:         0x00000000000000
Version:            0x01 (v1.1)
Complement:         0xBB (Ok)
Reserved 2:         0x0000
----| Backup Media |-----------------------------------------------
Chip:               EEPROM_V122
Size:               4/64 Kbit

Board / Cartridge Images

Cart Front
Cart Back

Special Thanks

Massive thanks to Zach Lambert for sending this in for release!


Download Ultimate Muscle - The Kinnikuman Legacy (USA) (Prototype)