Awesome game, I loved the original and I love this one. The main thing which I think that this one needs, though, is an undo button. Its such a simple thing that would just totally improve the construction interface. 5/5
I think that a little thing you could do to make the game flow better is have the miners stay crouched when you press down. It gets a bit annoying having to hold down and press space a lot. So far its a good game.
I think that the game needs to have an increase in the difficulty curve, I don't really like how easy it is in the infinite level.
Also,for some reason my score stopped going up at 107,384,251, might be a small bug you could fix.
I think that the grapple function needs to have a bit of work done. It seems to activate on random some times. Maybe you could use the V key to manually activate it? Good game though.
If you go to Diep Gat and look at the people you see someone who's a George Bush parody :D. He has horrible stats in almost everything and 0 intelligence xD