Costumes
One of the biggest sections of the game -- and the one with the most hidden content -- is the character customization portion of "Rayman Raving Rabbids 2." This lets you dress Rayman and the Rabbids using the costumes that have been unlocked during game play. These costumes are typically references to (or parodies of) famous movie and video game characters. Bunny costumes are unlocked by beating the default high scores on each trip; these include police and firefighter costumes. Getting over 12,000 points in several of the mini-games (including Concentrate!, Rolling Stone and Rabbid School) unlocks more costumes, including "Indiana Jones." Also, shooting the Right Rabbid in each of the shooting mini-games rewards you with a costume.
Funkytown and Other Games
The mini-game "Funkytown" is unlocked by playing through every game in each of the five trips. Playing through the mini-games within a trip also unlocks new games for that location. Some, such as "Burp" on the Europe trip, only appear in alternate plays. Some trips and mini-games, such as "Ice On Ice" and the music (dancing) games, require the Wii nunchuk. Each trip consists of five mini-games, and the last is always a music game that requires you to use the portion of the Wii-mote indicated on the screen at the correct time (similar to pressing buttons in the "Guitar Hero" series).
Shooting Games
Playing each trip also unlocks the various shooting games offered in "Rayman Raving Rabbids 2." These shooters are arcade-style first-person shooting games with Rabbids rushing toward the screen. The shooting game opened corresponds with the location of the trip. For example, playing through the Europe trip unlocks a shooting game set in Paris. Playing each mini-game and each shooting game also unlocks a new song in the Tropics trip.
Jukebox
Songs become available on the game's jukebox by playing the music games at the end of each of the various trips. The song that is played in the game is unlocked on the in-game jukebox, and it can be played at any time. The jukebox is found on the game's main menu, and it includes the songs from the music games as well as others from the soundtrack. Not all of the songs (such as "Making Fun of Everyday Life" and "Around the World") are included on the jukebox.