Bookworm for Nintendo DS is a puzzle word game where players link adjacent lettered tiles on the grid to form words and earn points. Developed by PopCap Games, it belongs to the educational and word genre, challenging players to enhance their vocabulary and spelling skills. The game features a lovable green worm named Lex who encourages players as they create words from a jumble of letters and avoid obstacles like burning tiles that can end the game. It's an engaging and brain-stimulating experience, suitable for word enthusiasts of all ages.