Tsai provided interior artwork for a number of "Dungeons & Dragons" manuals for Wizards of the Coast, including "", "Monster Manual III", "d20 Future", "Races of Eberron", "Lost Empires of Faerûn", "Explorer's Handbook", "Tome of Magic: Pact, Shadow, and Truename Magic", "Power of Faerûn", and "d20 Future Tech".