Single-player games like Outpost
Below are 11 single-player Steam games similar to Outpost, 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 page.
Ranked picks
- 1

Mars or Die!
Single-player alternative to Outpost — playable solo, no multiplayer required.
Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.
- 2

Hive
Single-player alternative to Outpost — playable solo, no multiplayer required. Shares Casual with Outpost.
A tower-defence-like colony sim where you must extract resources from the land and produce fuel to escape the planet. Expand across each map researching various structures, creatively avoiding or engaging with local creatures to take their precious crystals. Research, Build, Expand, Extract!
- 3

Crystal Storm
Single-player alternative to Outpost — playable solo, no multiplayer required.
Defend your castle, mine for minerals, and level up your wizarding powers in this thrilling action-roguelike game. Grab your wand and prepare to fight off magical foes in this epic battle for survival!
- 4

Belt Colony
Single-player alternative to Outpost — playable solo, no multiplayer required.
The year is 2040. You, an ex-sergeant, have signed a contract with a large mining corporation in the Belt. Mine ore, build out your outpost, travel to nearby asteroids and collaborate with other belters.
- 5

Surviving Mars: Pioneer
Single-player alternative to Outpost — playable solo, no multiplayer required. Shares Casual with Outpost.
The Red Planet is vast, desolate, and utterly indifferent to your survival. Surviving Mars: Pioneer is the first made-for-VR entry in the Surviving Mars universe, challenging you to carve out an existence in one of the most hostile environments imaginable.
- 6

Botanical TD
Single-player alternative to Outpost — playable solo, no multiplayer required. Shares Casual with Outpost.
Defend against evil snails with a variety of plants in this Tower Defense while YOU have to make constant decisions how your enemies get stronger.
- 7

The Unearthened - Complete Edition
Single-player alternative to Outpost — playable solo, no multiplayer required.
Build & defend a small remote mining base on Taichin XI from the alien hordes. Deploy defenses, upgrade your turrets and get ready for the nightfall. The Unearthened is a classic Idle Tower Defense game where you build towers and prepare for the invasion.
- 8

Toaster Defense
Single-player alternative to Outpost — playable solo, no multiplayer required. Shares Casual with Outpost.
Smash and shoot down robots in this challenging fast-paced game that mixes tower defense and shoot 'em up platforming. Build lamps, fans, and meat tenderizers to aid in your defenses and find the deadliest combination. Do you have what it takes to defend the world's cutest toaster?!
- 9

BattlefieldPriest
Single-player alternative to Outpost — 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
- 10

Outpost 3
Single-player alternative to Outpost — playable solo, no multiplayer required. Shares Casual with Outpost.
this is a mining , got resources to upgrade device and weapons game,monsters will appear and defence your mecha . player landed on different planets,them can collect diffient ore and upgrade weapons,find mining device and relics to make every round special . move character and mining ore
- 11

Occupy
Single-player alternative to Outpost — 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.