Don't forget about your vault! If you don't have enough space to keep your money safe, you won't be able to accumulate more than a certain quantity. You can tap directly on the building (enter the park and turn left) or the stats button (lower-right corner icon), and there you will see the price and requirements to expand its capacity. If you have pending requirements, have a look at the GO button to move on.
**Some of the last pending upgrades could cost more than your money limit. DON'T WORRY! The next update will always include new vault levels, and you won't have any problems advancing in the game.
If you reach the upgrade limit, please take in mind that future content updates will include more levels according to the park's size.
