Hoyle's Official Book of Games (or Hoyle Series or Hoyle Games) is a series of games produced by Sierra Entertainment. Volume 1, released in 1989, featured multi-player card games. Volume 2, released in 1990, featured 28 varieties of Solitaire. Volume 3, released in 1991, featured board games. Volume 4, was a remake of Volume 1, with two additional games. Sierra continued to publish more games to the series up to its demise. Encore Software has continued publishing entries to the series since then.
The games included are: Crazy Eights, Old Maid, Hearts, Gin Rummy, Cribbage and Klondike.
The original concept was submitted to Ken Williams (CEO/Founder of Sierra On-line) by Warren Schwader. Once the project was greenlit, Warren acted as the Lead Programmer as well as the Game Designer. The games were programmed using Sierra On-line's proprietary scripting language: Sierra Creative Interpreter (SCI). SCI was originally created to aid in the development of Sierra's core line of adventure games. Working with SCI to implement card games and to code artificial intelligence for the characters proved challenging.
Warren Schwader continued as the Lead Programmer and Game Designer for the next two games in the series.