Hey,
thanks for playing the game and hopefully enjoying it a little. The remark on the controls (button press vs release) is rather interesting as you are the second one, who mentioned it and there are other who dont see this as a inconvinience. I also tried both and the implemented way, felt right to me.
Yeah, I will work on the game a bit more as I like it and the feedback is also quite positive. As this was my first online game jam and also the first attempt in this genre it took me a little to get the basics done. Which would be the seemles tunnels you can build as you like and to have it run rather smooth on non gaming hardware even if you build some larger structures.
But the jam is really a great experience esp. because of the great feedback you get. Also playing so many different short games in one genre is really interesting. And I am happy I did it. :)