The Glitch Dungeon

The glitch dungeon (called this because of no other known name) is an easter egg tower full of supposed "glitches".

To reach it you need to drill or bomb the walls behind the river of fire on the Tower base; several ways to pass through the fire are possible, including using a skateboard or sword to slide through, killing the Firemen with any means possible, or walking between screens (every time you come onto a new screen, the game will leave a small space without fire, so you can abuse this to slowly crawl through).

On the other side, you must drill the cliff (or bomb it at a point the wall is no larger than three tiles) in order to penetrate it. Be aware: Once you make the hole you must not go back. If you move one screen away, your hole will disappear and you will need another collectible to drill through.

Once you go past the cliff is there is a superhidden, LSD-style landscape of randomly generated blocks, bricks, "star floors", death splats and banana peels; it changes color from screen to screen, blinks flashy stars, have stuff moving around all the time and apparently does nothing beyond that.

Between all of this you can find random sets of entrances and exits. Any purple up stairs that might show are enterable and will take you to the glitch dungeon.

If you manage to get to one of the exits, you will start again the game in a seemingly normal level 1. Its color may not be blue and soon you will realise levels from now on will behave profoundly erratic, popping walls in midst of open areas. Enemies can say random messages, teleport and change into cameras, dogs, and one specific collectible that can help you through.

Upon using it it will "explode" in a circle will about double the radius of a bomb replacing all existing floors and blocks with an area generated similarly to the glitch landscape and alerting guards. The area it generates can be extremely useful because, like the glitch landscape, there are banana peels which can stun guards. You can use it to get through walls (which is very useful in the glitch dungeon as it can generate where the level is impossible) and trip bots with the banana peels it generates). There is about 1 per level. It is the only object in the glitch dungeon.

It is known that using the error collectible (or any other perfurating item) can make you "fall off" the dungeon back to the Tower base, and reentering it brings you back to the "regular tower" on Hardmode. Any "error" collectibles remaining can be used on a normal tower as usual.

Regarding the "Glitch Dungeon", the game developer, Terry Cavanagh, stated in an e-mail:"'Congrats on finding the glitch level! It's my favourite part of the game. ""[The glitch level] is very deliberate. Tiny Heist started out as a bigger project, with a world map and different types of towers to explore. When I finished at the end of 2016, I decided to keep it simple and just focus on making one good tower. This left me with some unfinished content, so I decided to leave it in the game as an easter egg'."

In another email from Terry, (to me! :D) he stated that there is nothing of note at the end of the glitch dungeon, as it was a last minute implementation.

The longer you last in the level, the glitchier it gets. Run for your life!