Quattro Adventure (NES)

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Boomerang Kid: View Credits

Just after the Codemasters logo, immediately press A, B, Select, and Start before the title screen can appear to view the credits.

CHR RAM Smiley Test

To activate the CHR RAM "Smiley Test" easter egg for this game, you will need to power on the NES/Famicom console while holding Up, Down, Left, Right, B, Select, and Start. Note, however, that it is not normally possible to hold all four D-Pad buttons without specially modified controllers; standard NES/Famicom controllers will not work.

PRG ROM Smiley Test

To activate the PRG ROM "Smiley Test" easter egg for this game, you will need to power on the NES/Famicom console while holding Up, Down, Left, Right, A, Select, and Start. Note, however, that it is not normally possible to hold all four D-Pad buttons without specially modified controllers; standard NES/Famicom controllers will not work.

Super Robin Hood: 4 Extra Lives

At the title screen for this game, hold Left and A, then press Start.

Treasure Island Dizzy: Extra Rubber Snorkel

At the title screen, hold Down, Left, B, and Select, then press Start. You will be able to play with one additional rubber snorkel.

Treasure Island Dizzy: Invincibility and Start from Island in the Sky

At the title screen, hold Up, A, and B on Controller 1 and Up, Right, A, and Select on Controller 2, then press Start. This code will make you invulnerable and you'll also start from the Island in the Sky area.

Treasure Island Dizzy: Play with Controller 2

At the title screen, if you begin gameplay by pressing Start on Controller 2, you will be able to play with Controller 2.