some suggestions for the power of the cube area. if you choose scientific notation, to also use it here. It would also be cool, if you had the ability to remove all instead of just add all. also, if your screen is a bit dark, it is really hard to see how much each thing costs in the bottom boxes
 "Incremental Cubes"){kind=icon}
 "Tropical Merge"){kind=icon}
 "Kitty Catsanova"){kind=icon}
 "Paladog"){kind=icon}