WordQuest

Word Quest is a fun, polished word and number search puzzle with many twists on the classic genre. With innovative additions to the original concept, challenging features and layouts, and tons of content, it'll keep you motivated and playing game after game. And unlike other word search games, the puzzles adjust to your preferences to create just the right complexity with the intersections and coverage amounts you want. Word Quest is OpenFeint enabled with leader-boards, achievements and challenges (connect and play online against your friends), and is Wikipedia search capable. Source: The Developer Website.