First of all, you don't get 6 donuts with a bonus box, you only get a maximum of 3. Paying the $50k only gives you chances of getting the full three rather than just 1 or 2; they don't add up.
As for the next level, the game developers have been keeping that info under-wraps until a few hours before a new level hits.
It would be nice if they gave us a heads up a day or two in advance of a level update so our bonus level xp doesn't go to waste. I imagine they're afraid of people digging in the files too much to get a glimpse of what's coming.
OK here goes buy weather station gives you experience till you get your donuts sell weather station and repeat spend 50thto get three donuts Iif you have the money repeat simple
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As for the next level, the game developers have been keeping that info under-wraps until a few hours before a new level hits.
You leveled up twice in 1 day?!
Haha dat make me laff two hard