In addition to standard letters, tiles of various colors can appear depending both on the current level within the game and on the length of words being formed. Longer words are worth more points and have a greater chance of producing bonuses. The game requires players to match adjacent letters to form a word in the English language. It has also been released on the regular Nintendo DS cartridge.

Bookworm was released for the Nintendo DS digital distribution service DSiWare on November 30, 2009. In November 2006, PopCap Games released a sequel, Bookworm Adventures. Players earn more points by creating longer words or words which use less common letters and earn less for smaller words. As words are formed, they are removed from the grid and the remaining letters collapse to fill the available space.

From a grid of available letters, players connect letters to form words.

Windows, Macintosh, iOS, Game Boy Advance, Xbox Live Arcade, PDA, Smartphone, Java ME, BREW, DSiWare, Nintendo DSīookworm is a word-forming puzzle video game by PopCap Games. Cover art for the CD-ROM release of Bookwormīlack Lantern Studios (Nintendo DS and DSiWare)

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