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Use "gamebooks" in a sentence
"I tried comics, gamebooks, board games, and later poems and plays."
"Fighting Fantasy gamebooks by Ian Livingstone and Steve Jackson were in the mix as well."
"For more interesting connections between wargaming and RPGs, Demian Katz has a fantastic and comprehensive article "Gamebook History" on gamebooks "choose your own adventure" etc. - it has a section on how gamebooks were used from 1976 on as an early way of implementing solo play for RPG systems."