Preview by Trent Dickerson
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May 23, 2002
Source: Nintendophiles
"Game Summary
Deep within Wario's castle lies a treasure room filled with the spoils he has plundered during his many adventures. A mysterious black jewel, ensconced among the treasures, has a strange power to transform gems into monsters. While Wario rests in his castle upstairs the jewel begins to morph his treasure trove into a host of monsters, turning the basement of Wario's beloved castle into a bizarre parallel universe. Awakening the next morning to monsters instead of treasure, Wario must step into that alternate world to win the treasure back.

Features:

• Join Wario as he takes on his first starring role in a 3-D action game for NINTENDO GAMECUBE.
  
• Experience a new type of side-scrolling action game as Wario World pushes the genre's boundaries.
  
• Run, jump, punch and grab just about anything - even swing objects around and hurl them to break open new areas or defeat enemies.
  
• Balance atop mysterious floating balls that have sticky surfaces and jump ball to ball to reach new areas.
  
• Zip through wonderfully detailed levels and quirky puzzles to restore Wario's precious stolen treasures."