Portal with magnets
The puzzle gimmick in Magrunner, as per its name, is magnetism -- or at least something related to it. You get a magtech glove that is able to power objects from a distance with two different colors. Charges of the same color attract and different repel each other.
Coming from The Turing Test, I cannot help but compare Magrunner to it. In my opinion, Magrunner comes easily on top when it comes to how interesting the games' respective puzzles are. I suppose that is partly thanks to the mechanic simply being more imaginative but also because the puzzles have more moving parts. Magrunner has platforming and plenty of sections that requiring timing and haste.
Portal-like games struggle to come up with a plausible narrative -- why would anyone build a complex so huge to house multiple puzzle chambers. It is just not believable. Magrunner is no exception to this but that does not stop it from trying.
I found the game's writing terrible. Like its creative commons licensed music use, the story is cheap. It has illogical jumps and the protagonist is rather unlikable too, no small thanks to the voice acting.
Looks all right
Magrunner runs on Unreal Engine 3 and looks about it too. Anti-aliasing is terrible and there are a lot of loading screens (albeit short). The early levels had some fancy-looking reflective surfaces I do not recall seeing in an UE3 title before, however.
The FOV slider could have used numbers too. PCGamingWiki says it goes up to 110 degrees which is usually too much for me but I ended up maxing the slider without getting the very noticeable fisheye effect that should come with so wide FOV.