Thin Mode

Thin Mode (Scrawners in later versions) is a cheat available in all games.

How to activate (Fur Fighters)
In one of the rooms on the left near the entrance in Temple of Gloom there is a maze. Complete it (by walking in from the 'entry' point and leaping into the center when the pathway stops) to activate it.

How to activate (Fur Fighters: Viggo's Revenge)
Get 15,000 or more points on Bomber Bear.

Usage
When activated, most enemies will become very thin.