Indiana Jones and the Last Crusade: The Graphic Adventure roughly follows the same plot as the movie it is based upon. Certain scenes are omitted, but it sticks close to the original plot for the most part. The game uses the SCUMM system that was used in Maniac Mansion before it. This system involves choosing certain verbs to interact with objects and people in the game. However, this game features something that no other adventure games of the time had. The "Indy Quotient" system gives the players points based on how they solve certain puzzles. This gives puzzles multiple solutions and adds replay value to the game. Also included in the game are action sequences where Indy must fight to get by guards.