The Endless Quest books were two series of gamebooks released by TSR. These books were the result of an educational department established by TSR to develop curriculum programs for reading, math, history, and problem solving. The first series of 36 books was released from 1982 to 1987, the second series of 13 from 1994 to 1996. These were respectively the first and last gamebooks released by TSR. A short spin-off series of four Endless Quest: Crimson Crystal Adventures books (aimed primarily at young girls) were also released during 1985. There were also several series of similar books that did not bear the Endless Quest brand.