Completion bonuses:
Beat all games to unlock the Final award, “Sound” option, Credits mini-game, and Free Play mode stats.
Cosmic Gate:
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
Hard difficulty – At the title screen, press Down(2), B(2), A(2), Start.
Power-up – Pause the game and press Up(2), A(2), B(2).
Haggle Man (Haguruman):
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
Full health – Pause the game and press Down, Right, Up, Left, B(4), A(4).
Secret power-up – Pause the game and press Down, Right, Left, Up, B(4), A(4).
Scrolls appear – Pause the game and press Up, Right, Down, Left, A(4), B(4).
Summon allies – Pause the game and press Up, Right, Down, Left, A(4), B(4).
Infinite time – At the screen before the start of a level, hold Up/Left and press A B.
Continue game – At the “Game Over” screen, hold Left and press Start.
Restore life:
To restore life, enter three doors in reverse alphabetical order.
Alternate ending:
To unlock an alternate ending, beat all levels with under five seconds on the timer.
Haggle Man 2 (Haguruman 2):
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
Level select – At the title screen, hold A and press Up(2), Right(3), Down(2), Left(3).
Secret power-up – Pause the game and press Up, Down, Up, Down, B(2), A(2). Note: This can only be done one time per game session.
Three scrolls – Pause the game and press Down, Up, Down, Up, A(2), B(2). Note: This can only be done one time for each level.
Infinite time – At the “Stage Demo” screen, hold Up/Left and press A B.
Continue game – At the “Game Over” screen, hold Left and press Start.
Alternate ending:
To unlock an alternate ending, beat all levels with under five seconds on the timer.
Haggle Man 3 (Haguruman 3):
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
99 lives – Pause the game and press A, B, A, B, Left, Right, Left, Right.
9,999 Nuts – Pause the game and press B, A, B, A, Right, Left, Right, Left.
Advance to Boss – Pause the game and press B(2), A(2), Left(2), Right(2).
Rally King:
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
Invincibility – At the title screen, hold Up/Left Select.
Enemies eliminated – At the title screen, hold Down/Right Select.
Jump to level 2 – At the title screen, press A, B, A, B, Up Select.
Jump to level 3 – At the title screen, press A, B, A, B, Left Select.
Jump to level 4 – At the title screen, press A, B, A, B, Down Select.
Rally King SP:
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
Invincibility – At the title screen, hold Up/Left Select.
Kill enemies- At the title screen, hold Down/Right Select.
Jump to level 2 – At the title screen, press A, B, A, B, Up Select.
Jump to level 3 – At the title screen, press A, B, A, B, Left Select.
Jump to level 4 – At the title screen, press A, B, A, B, Down Select.
Star Prince:
Activate the following cheats by entering the corresponding sequences of buttons at the specified screen:
Invincibility – At the title screen, hold Up and press A(3), release Up, then hold Down and press B(3).
Continue game – At the “Game Over” screen, hold Left and press Start.
Cosmic Gate Warp:
To make a warp gate appear which takes you to the final stage, fire 64 shots in the first stage without hitting any enemies.
Skip to the End (Guadia Quest):
From the opening castle, Centraan, go northeast and follow the path around the mountains and back down along the ocean. On a peninsula in the far east is the Mausoleum. Enter it and walk exactly 9 steps to the north. Here, choose “Look” and a staircase will appear. Go down and talk to the man below. He’ll confirm you actually want to skip to the end, and do a bit of fourth-wall breaking. There is also a treasure chest with a unique item for you completionsts.