This version of Star Wars for the Game Boy, distinguished by its 'Rev A' designation, likely indicates a minor revision or update made by LucasArts after the initial release. Expect the core gameplay – side-scrolling shooting and Force usage – to remain the same as in previous versions, but potential improvements could involve bug fixes or slight adjustments to the game balance or level design.

Star Wars (USA, Europe) (Rev A)

Star Wars - The Empire Strikes Back (Europe)