Survive the endless horde — you attack automatically, just keep moving.
Move with WASD / arrow keys, or touch-drag anywhere. You attack automatically — positioning is everything.
Level up by collecting the gems enemies drop, then pick one of three upgrades.
Bosses arrive every two minutes. They drop item parts — collect 3 parts to unlock a new weapon forever, and boss kills open new arenas.
Power-ups sometimes drop on the battlefield: bombs, overdrive, freeze, and healing hearts. Grab them fast, they fade.
Gold carries between runs — spend it in the Shop on permanent upgrades.
Choose an upgrade — tap a card or press 1 / 2 / 3.