1. is smoove (polished and responsive/snappy ui) +++++
credit fonts do not match (it's not highly relevant the rest of the ui is mwah(chef's kiss))
2. should disable clicking or other wise give indicator when about to upgrade other wise in the heat of battle, a choice pops up and i'm still clicking at an enemy and poof
3. the music is good. however, it seems oddly ultra serious for me to be a bubble shooting buttons with more bubbles.