Account Mu is one of those IGMC 2014 contest games that was easy to overlook. The contest page has no media and the description simply says “It’s a puzzle game”. Pretentious? A little. I think showing some screenshots would have actually benefited the game as it has a cool minimalist style.
But it’s pretty clear from the start Account Mu doesn’t have big story ambitions. You play as a shadow boy (Limbo anyone?) who needs to clear puzzle rooms to progress. There is no opening text or tutorials. You simple progress up to a room that has a switch labeled (1) that switches off a box labeled . The next room adds a (2) switch and a  box. After that, switches will bring you into puzzles rooms. It’s all very clearly labeled and intuitive. Elegant even.
In terms of mechanics, you generally have to either walk over a switch to clear an obstacle or push an object onto a switch. You have your crates [X] and your sliding circles (X). Sliding a circle into a diagonal wall will move the circle perpendicular to the wall. There are also teleport puzzles later on. Objets in the game have one behavior which means it’s the puzzle rooms themselves that become more difficult.
As you progress, you can also collect pills by solving the more difficult rooms in each section. These pills don’t offer any feedback other than that they disappear after you collect them. Other than the haunting piano melody that plays in the background there is no sound in the entire game. With the stark white backgrounds and vector lines there is very little to distract you from solving the puzzles.
There is not too much more to say about this short, puzzle game. It does have an ending that can only be accessed by completing all the puzzles rooms and collecting all the pills. The ending makes it seem like the game might be metaphorical but you’ll mostly be playing it for the satisfaction of completing the puzzles. Later levels require thinking out your actions before-hand. Otherwise, you’ll find yourself hitting the reset switch. Some puzzles can be solve through trial-and-error but they’re well designed enough that a careful player will solve it without multiple attempts.
If you like logic puzzles check this game out. It’s brief (30-40 minutes) but should give you nice dopamine hits when you solve some of the later challenges.
If you rather just watch my playthrough of the game, you can find the videos below:
Note: I did hit a bug later on where a hallway took me to an unfinished room and there was no way to get back. You can see this in the youtube video so beware! Make sure to save.
UPDATE: I wanted to note that CashmereCat has released a new version of the game since this review was written.