These levels are moderately small and use the voodoo doll bug. Also this is VERY linear!

OCD-Doom: You must join the obsession to defeat the obsession.

Made-up Story: The Obsessive Compulsive Demon is enslaving the human race in destructive habits and you need to progress through tortuous routine while monsters attack you at almost every turn. Ultimately you are in the OCD's Lair where you must destroy the source, allowing humanity to be set free at last.

For maximum enjoyment/frustration, I recommend not saving the game except at the start of a new level.

The new levels are numbers 1 and 21-30 but Level 1 is just a message to the player and 21 is a death-exit to force you to start level 22 with just a pistol.

I welcome other authors using the technology I have developed to make bigger and better versions of this, as long as you give me due credit.