A small Dungeon Crawler by AdamStrange.

You awake in a cell, with only your wits and the ability to bind souls (swap places) with monsters.

With a horrid hoard of beasties for company, can you find the 3 Soul Books that will end your torment? Find food and weapons. bind a few unwary souls and attempt fiendish puzzle solving through 3 strange new worlds...

But watch your step. Every time you move, costs your soul!