Single-player games like Planet Killer
Below are 8 single-player Steam games similar to Planet Killer, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Planet Killer page.
Ranked picks
- 1
Crush The Rebellion!
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
The galactic empire is under siege from the rebel scum in all directions! Fight through endless waves of rebel ships using all of the weapons and resources at your disposal as you execute your sole orders: to Crush The Rebellion!
- 2
Alien Space Bastards
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
Alien Space Bastards is a procedurally generated 3D arcade style shooter. The aliens are attacking in force and you must utilize all the weaponry you have to survive the onslaught and bring piece to the galaxy. Multiple power ups will assist you on your suicide mission, good luck and fight bravely!
- 3
ComboChain Pulse
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
Survive relentless waves in a fast-paced top-down bullet hell shooter. Chain combos, dodge chaos, and master skill-based combat where every second matters.
- 4
Deep Space Survivor: Endless Starfield
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
"Deep Space Survivor: Endless Starfield" is a survivor-style game. Your interstellar battleship accidentally enters an unknown universe, fighting its way through endless enemies, roaming multiple star systems, and collecting meteor resources to forge your ultimate orbital weapon.
- 5
Astrum Vanguard
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
In Astrum Vanguard, a 2D horde-survival with bullet hell components, you pilot and upgrade your spaceship to defeat countless alien creatures. Survive the endless onslaught in the cosmic battlefield!
- 6
Nano Squadron
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
Manage your shields, evolve your ship, defend Earth. Nano Squadron is a top-down space roguelite where every run brings new upgrades and every mistake leaves you exposed.
- 7
Starforged Legacy
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
Outlast the onslaught in a sci-fi survivors-like where your decisions matter as much as your firepower. Command customizable starships, enhance your arsenal with 100+ strategy-defining upgrades, and annihilate endless fleets of cosmic combatants! Carve your legacy among the stars or die trying!
- 8
Nebula Strike
Single-player alternative to Planet Killer — playable solo, no multiplayer required. Shares Action with Planet Killer.
Nebula Strike is a space-themed 2.5D top-down twin-stick shooter game.