pop up to death
I was playing the endless mode, but i did not tested it enough time but I got some stuff that were unbalanced.
First, you get the special indestructible atoms that from what i know it counts to the maxium number of atoms.
And second, after some experiments atoms popups so fast, I had less than 3 atoms in my screen and suddenly a lot of them pop uped and I lost wothout managing to do something about it.
I really enjoyed the game in the normal mode but it may be a bit short since you can make a lot of levels easily, just don't have to give a reason for experiments, just put the challenge there.
Good work overall, maybe a remake, review or sequel will be a best hit.