Single-player games like Project 5: Sightseer
Below are 15 single-player Steam games similar to Project 5: Sightseer, 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 Project 5: Sightseer page.
Ranked picks
- 1
Windward
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
Windward is an action-filled multiplayer sandbox game that puts you in control of a ship sailing the high seas of a large procedurally-generated world.
- 2
TerraTech Worlds
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
TerraTech Worlds is an open world, build-craft adventure game, set on an uncharted alien world. Play solo or with friends, explore your surroundings, craft unique vehicles, construct automated bases, and battle your way through hazards and enemies to harness the power of your environment
- 3
Outpost Zero
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
Outpost Zero blends the genres of Multiplayer Base Building Survival and Simulation games in a Sci-Fi universe. On a lawless alien world, robotic scouts are tasked with building an Outpost for human colonists. Command AI minions, colonize the planet, and survive the perils of Gaiya.
- 4
Voidtrain
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
Become a crew member of an Interdimensional Express Train! Discover a new world full of mysterious creatures, enemies and places. Upgrade and customize your train, gather new materials and build better weapons. Play solo or online сo-op with up to 4 people.
- 5
Cubic Odyssey
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Adventure with Project 5: Sightseer.
Embark on a galactic journey in Cubic Odyssey, an open-world adventure where you explore vibrant planets, craft tools, build vehicles, and fight the Red Darkness. Uncover ancient mysteries, and shape a universe full of life, danger, and limitless possibilities!
- 6
Dig or Die
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.
- 7
Satisfactory
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Indie and Adventure with Project 5: Sightseer.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 8
Kenshi
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
A free-roaming squad based RPG. Focusing on open-ended sandbox gameplay features rather than a linear story. Be a trader, a thief, a rebel, a warlord, an adventurer, a farmer, a slave, or just food for the cannibals. Train your men up from puny victims to master warriors.
- 9
TerraTech
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector.
- 10
RimWorld
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Indie with Project 5: Sightseer.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 11
No Man's Sky
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Adventure with Project 5: Sightseer.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 12
Factorio
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Indie with Project 5: Sightseer.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 13
Planet Nomads
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
There's a whole planet of diverse biomes waiting for you to explore. Gather enough materials to build a mobile base that will carry everything a Nomad needs on a journey through an unknown land.
- 14
Windward Horizon
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Action and Indie with Project 5: Sightseer.
Trade, quest, fight, or simply set sail and enjoy the ambiance in this charming open world naval RPG. Sequel to Tasharen's fan favorite game Windward released on Steam in 2015.
- 15
Celestis
Single-player alternative to Project 5: Sightseer — playable solo, no multiplayer required. Shares Indie with Project 5: Sightseer.
Celestis is a real-time strategy game where the goal is to take control of the procedural galaxy by capturing stars.