Madness is a seven-day project that explores the theme of insanity in a roguelike very well, where players take on the role of an adventurer who has to descend ten dungeon floors and defeat the evil Dungeon Master who resides at the lowest level. Your sanity meter counts down after every couple of moves, but you can replenish it by drinking a potion of sanity if you have one in your possession. Weapons and armor can be equipped, and you will need to light torches and lamps regularly to illuminate your surroundings.
When your sanity is low, you will begin to imagine things. Instead of fighting the usual array of rats, goblins and dragons, players may have to do battle with odd creatures like butterflies, flying spaghetti monsters and unicorns (both pink and robotic varieties). Occasionally you may even come across one of your brethen, but the state of their mind is more likely to cause concern rather than bring a sense of comfort.