- Space-Manbo mini-game
Have the Game Boy Advance game Kessakusen! Ganbare Goemon 1+2 also inserted in the GBA slot. Space-Manbo will now be unlocked at the mini-game menu.

- Goemon New Age Shutsudou! reference
In the second town's underground prison, New Aged Goemon can be found occupying the second jail cell for his 'crimes against the Goemon franchise.'

- Mystical Ninja history
Have the Game Boy Advance game Kessakusen! Ganbare Goemon 1+2 also inserted in the GBA slot. At select locations throughout the game, various characters from the Game Boy Advance game will appear and tell you things about Goemon's past.

- Alternate costumes
Acquire all 30 Elephant Statues to unlock new costumes for all four characters.