The Endless Quest books were three series of gamebooks. The first one was released in the 1980s by TSR, while the following two were released by Wizards of the Coast. Originally, these books were the result of an Educational department established by TSR with the intention of developing curriculum programs for subjects such as reading, math, history, and problem solving. The majority of the books in the series were based on Dungeons & Dragons, but some were based on other TSR games (e.g. Gamma World, Top Secret) or even licensed properties (e.g. Conan, Tarzan).