Love the game, but Keppijeesus hits it right on the head - I've been restarting level 20 to get 3 stars for the night map for days (weeks!), and when no/few potions fall, there's just no chance.
The game seems to hit a plateau now that I'm in the low-Qi. Even after 12+ hours of being away, I've only got ~6Qi to show for it, and everything costs dozens or hundreds of Qi.
It would be helpful for the hover-text to tell you how many coins/sec you'll get if you purchase the structure. Especially if you're buying the first one of them.
 "PUSH"){kind=icon}
 "Anika's Odyssey"){kind=icon}
 "Curio Quest"){kind=icon}
 "Revolution Idle 2"){kind=icon}
 "Little Wheel"){kind=icon}
 "50 years (graphical)"){kind=icon}
 "Cursed Treasure 2"){kind=icon}
 "Epic War Saga"){kind=icon}
 "Realm Grinder"){kind=icon}
 "Redshift"){kind=icon}
 "Interactive Buddy"){kind=icon}
 "Obliterate Everything 3"){kind=icon}
 "Takeover"){kind=icon}
He Abelard, it will start counting after the next mission reset. We are not going to repair this issue as the arena is being paused on Wednesday.