i think the diffeculty should be lowered some. its kind of too hard to get through the first few levels. the minigame doesnt help much either. because you dont want to dig towards the edges so that you can put your defenders in those spots. giving you fewer places to dig, so that you get fewer chances to get the minigames bonus.
ok real science isnt that hard if an object has more mass than another it also has, by proven fact and math, a stronger gravitational pull than the object with less mass
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