YOUR HOME IS BURNING.
The atmosphere ignited.
Minutes left.
YOU TAKE OFF.
One ship. Empty fuel tank.
Only momentum left.
THE WAVE FOLLOWS.
Sling between gravity wells.
Outrun it. Or be consumed.
Your planet is burning. Your ship runs on fumes. Sling from gravity well to gravity well — before they catch you.
Tap anywhere = release from orbit
An alien escapes a dying world. Your ship is low on power — you have to slingshot from planet to planet to get away from the destruction wave chasing you from below.