Intruder

Intruder is a point-and-click puzzle horror video game played by Markiplier. The game's playthrough is notable for being the origin of The Crazed Butt-Stabber, one of Mark's earlier characters.

Game information
A burglary is occurring in your house and you must stop the intruder. Grab various objects around the house to kill the intruder before he gets you.

Episode

 * THE CRAZED BUTT-STABBER