Warren Schwader continued as the Lead Programmer and Game Designer for the next two games in the series. Working with SCI to implement card games and to code artificial intelligence for the characters proved challenging. SCI was originally created to aid in the development of Sierra's core line of adventure games. The games were programmed using Sierra On-line's proprietary scripting language: Sierra Creative Interpreter (SCI). Once the project was greenlit, Warren acted as the Lead Programmer as well as the Game Designer. The original concept was submitted to Ken Williams (CEO/Founder of Sierra On-Line) by Warren Schwader. For example, Leisure Suit Larry begins to comment about women, while Roger Wilco wants to escape the game to save the universe again. When the player took too long making a decision, the characters started having dialogues, each according to his background. These opponents included historical figures, members of Sierra staff, and characters from Sierra games. The games included are: Crazy Eights, Old Maid, Hearts, Gin Rummy, Cribbage, and Klondike.įor all games, except the last, the player could choose opponents, each having their own AI and manner of playing. The Hoyle trademark and facecards were used under license from Brown & Bigelow Inc. The series owes its name to Edmond Hoyle. Hoyle's Official Book of Games: Volume 1 was the first card game simulator series released by Sierra entertainment.