Single-player games like Outcast 1.1
Below are 9 single-player Steam games similar to Outcast 1.1, 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 Outcast 1.1 page.
Ranked picks
- 1

Outcast - Second Contact
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action and Adventure with Outcast 1.1.
Outcast – Second Contact is the complete remake of the cult title which sparked the open world, action-adventure genre. Take off on an exploration of Adelpha, an alien world as beautiful as it is dangerous, where your heroic journey places the fate of two worlds in your hands.
- 2

Destroy All Humans!
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action and Adventure with Outcast 1.1.
The cult-classic returns! Terrorize the people of 1950's Earth in the role of the evil alien Crypto-137. Harvest their DNA and bring down the US government in the faithful remake of the legendary alien invasion action adventure. Annihilate puny humans using an assortment of alien weaponry and psychic abilities.
- 3

Xatrom Command
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action with Outcast 1.1.
Team up and shoot down waves of invading aliens. Single player or multiplayer top-down shooting action
- 4

Dead Space
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action and Adventure with Outcast 1.1.
The sci-fi survival-horror classic returns, completely rebuilt to offer an even more immersive experience — including visual, audio, and gameplay improvements — while staying faithful to the original game’s thrilling vision.
- 5

Outcast - A New Beginning
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action with Outcast 1.1.
Explore the breathtaking alien world of Adelpha, support the local Talans in their struggles and fight your way through fast-paced battles against invading robot forces in this 3rd-person, open world, action adventure sequel to the 1999 cult classic.
- 6

Red Faction®: Armageddon™
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action with Outcast 1.1.
Red Faction: Armageddon Path to War includes 4 new missions, 2 unlockable items and 10 new achievements!
- 7

Flashback 2
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action and Adventure with Outcast 1.1.
Immerse yourself in an action-packed cyberpunk universe where the fate of humanity itself hangs in the balance. The Morphs are preparing their final attack, determined to enslave every civilization in the Solar System — and it's your mission to fight back!
- 8

Destroy All Humans! 2 - Reprobed
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action and Adventure with Outcast 1.1.
Crypto is back with a license to probe. The alien invader returns, groovier than ever. Experience the swinging ‘60s in all its chemical-induced glory and take revenge on the KGB for blowing up your mothership. You’ll have to form alliances with members of the very species you came to enslave.
- 9

The Last of Us™ Part II Remastered
Single-player alternative to Outcast 1.1 — playable solo, no multiplayer required. Shares Action and Adventure with Outcast 1.1.
Experience the winner of over 300 Game of the Year awards, now on PC. Discover Ellie and Abby’s story with graphical enhancements, gameplay modes like the roguelike survival experience No Return, and more.