WarioWare, Inc.: Mega Microgame$!

WarioWare, Inc.: Mega Microgame$!, known as WarioWare, Inc.: Minigame Mania in the European English version, is a minigame compilation for the Game Boy Advance and the first title in the WarioWare series of games. It was released on March 21, 2003, in Japan; later that year in Europe, the Americas, and Australia; and on July 4, 2005, in China. The game has the player play through themed gauntlets of microgames, very short minigames which only last for a few seconds each and whom the player must figure out how to complete through short written instructions and contextual clues. The game's plot centers around Wario who founds a game company and creates a video game along with his friends, an entirely new cast of characters introduced herein. The music and sound effects were taken from Wario Land 4.

Based on the "Sound Bomber" mode of Mario Artist: Polygon Studio, WarioWare, Inc.: Mega Microgame$! was a passion project for its development team, who developed it in secret before showing it to their producers. The game was praised by critics for its innovative concept and addictive nature, and would become a commercial success despite low internal expectations, selling over one million units worldwide.

It was re-released as a free downloadable title for the Nintendo 3DS Ambassador Program in December 2011, only available to people who purchased a 3DS before the August 12, 2011 price drop. The game was also released on Wii U's Virtual Console in the Americas, Europe, and Australia on April 10, 2014, then for Game Boy Advance - Nintendo Switch Online as one of the application's launch titles on February 8, 2023.