build mode is horrible, like really bad.
you can't move the camera from it's fixed position (you can rotate it), bricks don't go on an automatic level (you need to use the scroll wheel) and it can be very hard to see where you're placing something.
plus the area where you actually get to build is tiny, there's a huge grey box taking up a good amount of the screen that serves no purpose.
it also does not teach you how to make a working vehicle yourself, you're just given a ton of bricks and expected to know everything.
the game itself looks amazing however, but that's not enough for it to be a "MUST BUY"