Keen: Modding

I made this using Levellord's patch index.
Keen's shot will constantly bounce off the walls until it zaps an enemy or elevator. The interesting part about this patch is that even though it uses the ball's behavior, its graphics doesn't change. This is one of a small handful of exceptions to the graphic change rule.

Actually, anything using the ball behaviour will use the animation it starts with, this is mentioned in the sprite patch section.

Keens shot will also bounce of ceilings with this patch. [And floors, the floor is usually closer]