Original sentence: In 1985 Steve Jackson wrote a picture gamebook with the title Tasks of Tantalon, in which the  player was required to solve a series of puzzles set by the wizard Tantalon, which were presented as large, full colour pictures containing hidden clues to be located and assembled
Edited sentence: In 1985 Steve Jackson wrote a picture gamebook with the title Tasks of Tantalon, in which the player was required to solve a series of puzzles set by the wizard Tantalon, which were presented as large, full colour pictures containing hidden clues to be located and assembled