i know how they get such high scores...
they cheat.
here's the trick... it also works on tower defense...
1 - make a huge map, that's like a maze. this will mean that the enemies will take an extreme amount of time just to get halfway through the map.
2 - begin the game. place down anything you can afford and keep hold of space, the waves will increase around 3 waves per second, giving you a final high score of around over wave 1000+ (depending on how big your map is...)
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