Planet Killer

Planet Killer is a physics-driven destruction roguelite where you attack hostile planets with up to six players in online co-op. Choose a starting ship with its own strengths and weaknesses, then fire weapons into simulated, pixel-based worlds. Every shot permanently reshapes the battlefield as you carve craters, trigger chain reactions and face planetary defenses. Destroying planets unlocks new ships.

Destroy hostile worlds

Planets are procedurally generated, with distinct cities, surface features, cloud and storm systems, continents, islands and oceans. Star fields, nebulae and galaxies also vary across the backgrounds. Your attacks fracture terrain, collapse defenses and leave lasting impacts; crater carving and shockwaves can set off cascading explosions.

The planets fight back with surface cannons, missile batteries and defensive countermeasures. Worlds become increasingly dangerous, with elite planets, storm worlds and bosses among the encounters.

Build your loadout

You can combine hundreds of modular weapons, including missiles, cannons, lasers, rapid-fire barrages and experimental weapons. Defensive and utility modules add further options, and you can adapt your build to counter changing planetary defenses. Runs offer new upgrades and strategies, while a galactic shop sells weapons, modules and ship upgrades.

Runs and progression

Each run takes you deeper into hostile space through procedurally generated encounters and increasingly difficult planetary variants. Death is permanent for the run. You can chart your path, upgrade your ship and see how far you get, while ranking up your Planet Killer emblem and title and chasing high scores.

The game includes over 128 unique starting ships to unlock, alongside ships you earn by destroying planets.