I really liked this game. When I read through the tutorial, it was a bit overwhelming, but you catch onto the controls fast when actually playing, and the managing of different parts of your ship make it quite interesting.
A little nitpick I have is, that I think it'd flow better if you just had to hover over the engine again and that forms the loop, but currently you have to put the end *exactly* on the engine (and sometimes I was a bit too much right to it so my loop didn't form.
Oh and a slight bug, but the title screen theme didn't play for me when I started the game for some reason. After going back from the tutorial, the title screen theme played though (the music is pretty good btw) : )