Stack the same upgrade three times in a row to trigger a reshuffle. Upgrades persist across all classes.
Every few waves you can unlock a new class.
Select which unlocked class you want to use.
You died with honour attempting to defend your cosmos from the other‑worldly invaders. Your sacrifice echoes across the stars, a reminder that even in defeat, courage shines brightest. The void remembers your stand. Will you rise again?