Yeah, we concluded the testing on Saturday and you have to pay actual money to get rid of the ads now. xD
This thing with the black boxes is a known bug, but I fixed it on Friday in the afternoon. Make sure to update the game.
I'm glad you enjoy the "negative power-ups". xD Yeah, we've been trying to come up with more of them, but have only 8 so far (5 positive, 3 negative). It's difficult since the gameplay is relatively simple so there's not much craziness you can add.
Also, we officially released the game today. I'll make an official post here soon. We're currently getting things running in terms of marketing.