Demon Doif is a first-person arcade game developed by Lawrence Thorp and GoblinHat where you need to feed a demon with the right items. Your assistance is required and care is needed when feeding him.
The gameplay works with commands to pick up items and play in the demon's mouth. There is a clue in the scenario of which object is the correct one to be played. Use the RMB to pick up and hold the items and LMB to launch it. The bomb item serves to put the demon to sleep for a while and reset all items by pulling the rope.