A space station sits at the center of the screen. Ships come in from both edges, and the turrets fire on their own. Every chapter of the campaign ends on a boss, endless opens partway through it, and the daily run hands everyone the same loadout.
In the game
- 10 weapons
- 4 modules
- 6 bosses
- 74 ship types
- 6 rarities
- 7 base facilities
- 12 station looks
The turrets need no aiming. The one input during a fight is a tap on a ship, which turns every gun on it for a moment. Scrap from kills buys upgrades between waves, and each weapon's upgrade tree is the same every time that weapon is mounted.
Between stages there is a base to build, a lab that researches on the clock, and a hangar where copies of a weapon merge into a rarer one.
Modes
Campaign. A boss every ten stages, and a stage condition printed on the briefing before launch.
Endless. Opens at stage 25. The waves do not stop.
Daily. One run on the day's seed with a loadout issued to everybody, so the board compares play and nothing else.