$12.99Planet Killer Blow up planets, keep the craters
Orbit hostile planets with up to six co-op friends and blast them apart together, carving craters into fully simulated worlds while cannons and missile batteries fire back. Stack missiles, cannons and lasers into absurd builds, split targets, revive the run, and see how many worlds you erase before one does you in.
Is Planet Killer worth it?
Planet Killer is worth it if…
- you like co-op games where everyone shoots at the same giant target
- you like short roguelite runs with new builds each time
- you like watching terrain break apart and stay broken
Screenshots
Crack planets open together
You and your co-op friends orbit a living planet and open fire, watching terrain fracture and craters stay where you put them. One of you strips shields while another drills toward the core, and chain explosions do the rest. Defenses keep shooting from the crust, with cannons, missile batteries and countermeasures scaling up as you push deeper. It is fast, loud and replayable, and having friends to divide the incoming bullet storm makes the chaos manageable.
Stack weapons and pick ships
Each run starts with a ship choice, and destroying planets unlocks more of the 128 on offer, each with its own strengths and weaknesses. Between worlds you hit the galactic shop for weapons, modules and upgrades, stacking hundreds of modular guns, beams and utility parts into strange combinations. Procedural planets, storm worlds, elites and bosses keep routes fresh, and permanent death plus high-score chasing give every co-op run a natural end point.
Good to know?
Can you play it in co-op?
Yes, with up to 6-player online co-op against planetary defenses. You share the orbit, split damage and defense pressure, and build ships that cover each other.
What do you actually do moment to moment?
You fly your ship around a planet, fire stacked weapons into its crust, dodge cannons and missiles, then shop and upgrade before the next, harder world.
How does a run end?
Death is permanent for the run. You push deeper into hostile space through deadlier planet variants until defenses win, then rank up your emblem and chase a higher kill count next time.

















