Upgrade tracks

Every plane has the same three tracks. Knowing what each buys is most of the strategy.

Engine

The headline track. Each level raises speed, and every 5 levels the plane evolves a new part. Each plane’s part sequence is on its page under Planes.

Income

Raises the Coins you bank per run. Income compounds: the sooner it’s high, the faster every later upgrade arrives.

Slingshot

Raises launch power. A stronger launch means more of the run at high speed, which stretches distance.

Priority

Income compounds, so keep it healthy. Engine and Slingshot convert directly into distance when you need to break a world’s gate. The exact per-level costs are on every plane page; the order you buy them is yours.