This is a great game, but let us start at the beginning: The Main Menu reminds me a lot to „Mirror's Edge", which isn't a bad thing because it brings nearly the same amount of freedom. Freedom is also the main aspact of the game; not only because the super awsome looking alien playermodel can be custumized by painting but also because there are no connections to the real world: The courses consist out of blocks which consist out of smaller cubes, the floor seems like a giant glass plate shimmering in the light of the sun, which creates an atmosphere of freedom and peace. And of course: The alien can jump unimaginally high and wide and can perform extremely long horizontal wallruns and wallrun combos. Now we reached the gameplay: The mechanics work quite well but they are hard to master. Really hard. Especially the horizontal wallrun to jump to horizontal wallrun move. If the player doesn't reach the wall in the right angle the alien won't perform a wallrun but instead falls directly down. This can be frustrating but it also can be a motivation to gain more skill in those moves. The other mechanics work great, but it is a bit unrealistic that the alien can perform the vertical wallrun when standing as high as when running.
The predesigned courses are more levels than actual locations, the blocks are placed senselessyl around the map to give the player some obstachles and they don't seem to express something. The idea to add colored blocks wich have an effect on the player's movement is pretty great. However, hitting the floor doesn't kill the player, which opens some doors to cheaters and glitchers. And at least we have the course editor. I like course editors. And I am sure that will solve the problem of the random looking leveldesign.
I can recommand this game to everyone who does parkour himself or likes 3D platformer cause this is the ultimate form of freedom.