Single-player games like Guardians of the Sanctree
Below are 13 single-player Steam games similar to Guardians of the Sanctree, 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 Guardians of the Sanctree page.
Ranked picks
- 1
Per Aspera
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy and Indie with Guardians of the Sanctree.
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
- 2
First Feudal
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Action and Strategy with Guardians of the Sanctree.
Become a real medieval feudal lord: start with a small village and build it up into an enormous impenetrable castle. You will have to repel enemy raids: hide behind thick walls, lure your enemies into strategically placed traps, and even lead your loyal peasants into battle.
- 3
Ratopia
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy and Indie with Guardians of the Sanctree.
Ratopia is a new game that has combined elements of both strategic survival and city building. With plenty of content available, and more planned, enjoy a vast world to adventure and populate with citizens! Build your own economical system to sustain your ideal city of Ratopia.
- 4
Kingdom Two Crowns
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy and Indie with Guardians of the Sanctree.
Gather coins, build defenses and reclaim your fallen Kingdom. Explore and uncover secrets, unlock new technologies and protect your crown versus waves of Greed monsters that come at night. Kingdom is a solo or co-op micro-strategy and tower defense game set in an atmospheric pixel world.
- 5
Northgard: Definitive Edition
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy and Indie with Guardians of the Sanctree.
Northgard: Definitive Edition is a critically acclaimed real-time strategy game based on Norse mythology. Lead your clan, uncover the secrets of a mysterious newfound continent and defeat your enemies to conquer the Throne!
- 6
Dwarf Fortress
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy and Indie with Guardians of the Sanctree.
Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.
- 7
They Are Billions
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy with Guardians of the Sanctree.
They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
- 8
Against the Storm
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Strategy and Simulation with Guardians of the Sanctree.
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
- 9
Terraria
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Action and Indie with Guardians of the Sanctree.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 10
Oxygen Not Included
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Indie and Simulation with Guardians of the Sanctree.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 11
AutoForge
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Action and Simulation with Guardians of the Sanctree.
A 2D automation sandbox adventure. Build an automated factory with Mana-powered machines, progress through an expansive tech tree, explore a vast and wonderful world, upgrade yourself with ancient technologies, and defend it all from invasions.
- 12
The Diary
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Indie and Simulation with Guardians of the Sanctree.
Several diaries gradually reveal the thrilling story of a missing case; after multiple deductions, are the answers in the past or present? With frequent plot twists, you never know which is the truth and which is the unexpected; in a dense fog, time buries the past, but the marks remain.
- 13
成土市的我 CTcity
Single-player alternative to Guardians of the Sanctree — playable solo, no multiplayer required. Shares Indie with Guardians of the Sanctree.
Reality ruins, tiles of CT city block his heart. Imagination flies, plants in the mind become his star. Boy wonders, the road is nowhere to go. Journey begins, the key is just himself. Welcome to CT city!