Indiana Jones and the The Last Crusade Graphic Adventure PC Game ©1989 by LucasArts

Box states "IBM AT Compatibles only.  640K RAM, VGA Only.  Joystick and mouse optional.  Supports optional Ab Lib and CMS sound cards.  Hard disk drive required." 

Includes:
(3) 3.5" High Density Game Disks
Henry Jones' clue-packed Grail Diary
Instruction Manual
Original Box

Disks, diary, and manual in great condition.  Box has some corner/edge wear but structurally sound.