The Munchkin RPG is an extended parody of Dungeons & Dragons: the latter has "cantrip" spells, the former has - among others - "can trip" (foils pursuers with preserved foodstuffs), "can't rip" (reinforces fabrics) and "Kant trip" (induces hallucinatory deontology). It consists of the Munchkin Player's Handbook, the Munchkin Master's Guide, the Munchkin Monster Manual, and the Munchkin Monster Manual 2.5 (a joke on Dungeons & Dragons 3.5).
The Star Munchkin Role Playing Game is one book, and includes rules for spaceship design and a new class not seen in the card game, the Farce K'nigit.