You should just continue to play the more you aircraft hangars and neerhaald bomb and games WINS. Especially those things you get points and and for example, if you need 20,000 points than you play until you've reached then you a rank that up. has that happened then you need to play by, for example, you must now 25,000 points. but as you go by.
the higher you rank the more points you need to retrieve.
You can also earn you money and better aircraft of buying and upgrading.
I hope that you referred to this, if so, I hope that the clear for you.
Greetings Ysmen and I'll see you in the air.