Economy
Economy
The game runs on 3 currencies. Your plane earns Coins in flight and you pour them back into upgrades. Gems are the premium currency. Plane Tickets are play energy you spend to attempt a run.
Currencies
| Icon | Currency | Role |
|---|---|---|
| — | Coins | Soft currency. Earned passively as plane income; spent on the Engine, Income, and Slingshot upgrade tracks. |
| — | Gems | Premium currency. Used for speed-ups, special unlocks, and shop offers. |
| — | Plane Tickets | Play energy. A run costs one ticket; they refill over time, top up when you clear a level, and never buy planes. |
Coins do all the work. Gems never gate progress, and Plane Tickets only pace how often you can fly.
Prices
Every price in the game comes from five formulas:
| Quantity | Formula |
|---|---|
| Engine upgrade cost | 100*pow(3.75,{lvl})*pow(1.25+0.05*{lvl}*(1+0.5*{unv}),{englvl}) |
| Slingshot upgrade cost | 100*pow(3.75,{lvl})*pow(1.25+0.05*{lvl}*(1+0.5*{unv}),{slglvl}) |
| Income upgrade cost | 100*pow(1.5,{inclvl}) |
| Income multiplier | pow(2, floor({inclvl}/{upgtiers})+{lvl})*(1+0.1*({inclvl}%{upgtiers})) |
| Flight reward (coins) | ({dist}+{colcoins})*{incmult} |
In these, lvl is the world’s position, englvl / slglvl / inclvl count that track’s purchased levels, and upgtiers is 5. In practice: Engine and Slingshot start at 100 Coins and get 3.75× steeper each world, Income costs the same everywhere, and the multiplier doubles every 5 Income levels. Worked numbers are on every plane page.
Gem pack prices are set in the store and vary by region.