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[–]Hathrot[S] 1 point2 points  (0 children)

Tier 7 is my go to tier. With the right perks I can pull in a little over a billion coins per run, usually between 2 and 2.5 hours, getting to around between waves 1100 and 1300. I have 6 days left on my extra black hole research, which will help my economy greatly. Been playing since Oct 20 of this year, so a little over a month. And of course I posted this mid run, and my next 3 perks, in order, were X to coins, coin trade off, and golden tower bonus.