This is a great game but is held down by a few flaws. The placement of the buildings can be very troublesome at times, particularly if they are blocking the mothership. If humans stay in the buildings, then it's impossible to grab them, making the game a bit harder than it should be. There is some kind of bug where you hold down the space bar while on a building, it sounds like it's trying to activate the pickup script way too often.
The timer is strange, sometimes I have hardly any time, but other times, I have way too much time and end up just picking up everyone purely because I have nothing else to do.
I have to admit, I love the retro theme to this. If someone told me this was an arcade game I would believe them. If the claw was more flexible, that would be nice. But this is a fantastic game, brilliant work!