Surprisingly dark puzzler.
The levels in the game are split into 2 sets. First, you play through all the levels, then you play the "mirrored" levels which have extra things added to them which makes the puzzles much harder. It's a cool concept and gives the game some length by bringing the total number of levels ~40-50.
In the puzzles, you can control which way the world is tilting and which direction your character walks in. By doing this, you have to get your character through a door which is the exit. All the levels follow an MC Escher type theme with impossible structures everywhere. Trying to wrap your head around the fact that the levels arent flat is one of the hardest things in the entire game. The levels starts out simple enough but then you move on to adding death balls, inversions to different colors, and veils which allow you to control the balls. The additional feature is the space bar which reverses time (Braid style) so you can fine tune your movements.
The levels have a natural challenge to them as more levels get introduced. However, the last level in the main campaign has a ridiculous difficulty spike and the last two levels of the mirrored levels are insanely complex. The difficulty jumps but for someone who is really into puzzlers, you will love it. It's only 2-3 hours with me being terrible but it’s a good length for a puzzler
There isn’t much of a story. You meet a dude and he goes through the doors. But if you read the plaques at the end of each set of rooms, you will get a sense of a scientist exploring a hypercube sort of deal (which is the mirrored). It's quite dark as each time you die, you get a message which depresses you. The music is creepy and adds to the atmosphere quite well. At the end of both the normal and mirrored edge, you try and cross a bridge... and stuff happens. I'm not sure what. But something happens. Overall, there is a story but I can’t make sense of it. However, it creates a wonderfully creepy atmosphere
Overall, if you like difficult puzzlers, have fun. Otherwise, it’s not really worth your time for 10 dollars.