Single-player games like Outpost 3
Below are 12 single-player Steam games similar to Outpost 3, 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 Outpost 3 page.
Ranked picks
- 1
CRYPTARK
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
Cryptark is a 2D sci-fi shooter where you take on the role of a heavily armed privateer seeking to earn government contracts by boarding deadly alien space-hulks. It's up to you to strategize a plan of attack, pick an equipment loadout, and destroy the central core to be victorious.
- 2
Wall World
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
Explore the mysterious Wall World on your giant robospider: mine for valuable resources, upgrade your equipment to fight off hordes of monsters, and discover exotic biomes in-between attacks. Will you be able to survive and learn the secrets of the Wall World?
- 3
GALAK-Z
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
Brand New features!! The Void DLC offers endless gameplay, Online Leaderboards, and a Daily Challenge that allows players to compete worldwide for the top score. Anime inspired 2D space combat simulation at its best! GALAK-Z is a modern, A.I.
- 4
Vampire Survivors
Single-player alternative to Outpost 3 — playable solo, no multiplayer required. Shares Casual with Outpost 3.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
- 5
Octogeddon
Single-player alternative to Outpost 3 — playable solo, no multiplayer required. Shares Casual with Outpost 3.
You ARE Octogeddon, a massive mutant octopus with one mission: DESTROY the world! Grow more tentacles and evolve each of them into deadlier and deadlier weapons until you become the ultimate eight-legged killing machine!
- 6
Stellar Initiative
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
Stellar Initiative is a roguelike tower defense game where you land on the planet and use your orbit ship to deliver buildings and support you with fire. Complete missions, install new upgrades, discover powerful artifacts, and find the best strategy!
- 7
Atomicrops
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
A twin-stick, bullet-hell, roguelite where you must cultivate and defend the last farm in a post-apocalyptic wasteland. Farm mutated crops, upgrade your weapons, marry townsfolk, and kill every mutant creature that tries to invade your homestead! Yee-haw!
- 8
Void Scrappers
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
Blast hordes of alien ships into junk. Collect the scrap to upgrade your ship into an unstoppable force of destruction. Unlock new characters and weapons and upgrade your stats between runs.
- 9
Outpost
Single-player alternative to Outpost 3 — playable solo, no multiplayer required. Shares Casual with Outpost 3.
this is a tower defence game,we need upgrade our weapons to fight waves of enemies,robots can mining diamonds,and we need spent those in many aspect，features of this game: 1 return back before dager comes,2tempory upgrade are important but permanent upgrade are better
- 10
BattlefieldPriest
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
this is a RTS strategy game,if you like Warcraft or Command & Conquer you maybe like this game players controller a priest to healing soldiers and choose which kind of soldiers the kingdom need , killing monters and murch for their nests
- 11
Occupy
Single-player alternative to Outpost 3 — playable solo, no multiplayer required.
Accumulate soldiers and capture cities. Choose the optimal attack routes and timing. Formulate strategies to adapt to the ever-changing battlefield and assemble your forces wisely. Defeat enemies, upgrade your troops, and take on even greater challenges.
- 12
outpost4
Single-player alternative to Outpost 3 — playable solo, no multiplayer required. Shares Casual with Outpost 3.
Build your mobile outpost and combine over 20 weapons with 100+ items to create unique builds. Grow stronger against endless enemy hordes, conquer new planets, and experience the thrill of evolving from desperate survival to overwhelming firepower.