Rayman 2 - Revolution - Platform: Playstation 2

Cheat mode
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Go to any map except the first and enter the options screen. Select "Sound",
highlight the "Mute" option, then hold L1 + R1 and press L2, R2, L2, R2, L2,
R2. A cheat menu will appear.

Secret multi-player maps
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Go to the first map, then enter the options screen. Select "Language", then
select "Voices".
Highlight the "Raymanian" option, then hold L1 + R1 and press L2, R2, L2,
R2, L2, R2.
Three additional multi-player maps will be unlocked.

Baby Soccer secret map names
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Hold L1 + R1 and press L2, R2, L2, R2, L2, R2 during game play in Baby
Soccer.

Faster game completion
----------------------
Win the Cave of Bad Dreams level. When the monster says that the treasure is
yours, select "I want the treasure". You will be shown laying in a beach chair, 
on your own private island with the treasure behind you.