GLOBOX swallowed a purple lum that causes him to have a split personality….and the other personality is evil!  ANDRE the dark lum boss has an evil plan to try to take over the Heart of the World once again – this time by transferring the mind of the “evil GLOBOX” into the cloned body of REFLUX.

New to the series:

• Brand new 3D isometric view allowing a totally new gameplay
• Anti-aliasing technique allowing even smoother and more
  beautiful animations
• New camera system to look around in the world

Characters:

• Two Playable Characters – Rayman & Globox
• All familiar characters of Rayman3 GBA + brand New Characters created just for this   game.
• 8 different types of devious enemies, each with their own ways of moving and   attacking.
• 4 huge Bosses - each with unique attack patterns and weak points
  Ex.: Fire Monster, Infernal Plum Making Machine, Cloned Reflux Bosses

New Gameplay:

• 3D isometric gameplay brings the real Rayman console experience to the GBA platform
• Game structure: 5 Worlds made up of 16 Levels
• Gaming modes:
• Play as either Rayman ( 9levels ), Globox ( 2 levels )
• Play cooperatively with Rayman and Globox (5 levels)-use them as a team to solve   puzzles
• Copter Mode : the classic copter fun with Rayman through a full sky level
• Boat Mode : Rayman on a raft for 1 fast spaced level
• 3 PowerUps: Super Speed, Fire Resistance & Heavy Metal Fist
• Lots of Puzzles and plenty of things to explore
• Many rewards and scoring bonuses
• You won’t be left without any help: Lums and Teensie cages will provide hints and   point out areas that need to be accessed.

Source: ubi.com