IPS that adds an in-game pause screen map feature. The gunship, save stations, refills, beam locations and collectible items are marked on the map with their own icon. Dots representing items that can be collected are removed from the map once the item is collected.

Pause screen HUD modified to show current in-game time along with items collected from total available.

Some minor graphic changes to allow for enough tiles that rooms can be differentiated.

Gameplay is otherwise unchanged. Whether or not to play the original without the map first is up to you, though simply having the map changes the experience a lot.