Batman is Screaming

This game was created in 2012, and uploaded recently by someone besides Porpentine. It was created at least as early as March of that year, since it's mentioned in an AdventureCow forum.

It is the shortest of the early experiments (which include Myriad and a few others). However, it contains a lot of Porpentine's signature style, including body transformation and horror, protagonists which evoke multiple emotions simultaneously, and surrealism.

This is not the kind of game I imagine Porpentine would release today, but it's interesting as a historical insight.