Single-player games like Theo's World
Below are 9 single-player Steam games similar to Theo's World, 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 Theo's World page.
Ranked picks
- 1

Shorekeeper
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Indie and Adventure with Theo's World.
You washed ashore on a mysterious island. Now what? Build a shelter, find food, and explore the unknown. Or just sit by the campfire and watch the sunset. Farm, craft, and manage your new island life entirely at your own pace.
- 2

Russian Village Simulator on Mars
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Action and Indie with Theo's World.
Develop a village colony on Mars, using various resources and bringing the unique flavor of Russian culture to the distant space.
- 3

Runika: A World of Little Legends
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Action and Indie with Theo's World.
Build a farm… to save the world. Runika blends a cozy 2D sandbox with an unfolding story about a world being pulled into the mysterious Rift. Grow crops at your own pace, build your farm, gather resources, craft your own equipment, and uncover what awakens within the Rift.
- 4

Kalit
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Action and Indie with Theo's World.
A unique survival adventure, animated in a 1930s rubber hose style! Fight to survive: capture creatures, farm, mine, and craft everything you need: from gear and vehicles to your base. Explore strange lands and an underwater world of shipwrecks, dangers, and hidden wonders.
- 5

Starseed
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Indie and Adventure with Theo's World.
Starseed is an immersive farming sim that blends tranquility and subtle dark undertones in an atmosphere of isolation. Millions of miles from civilization, you find yourself alone on distant worlds, working without the distraction of combat. It’s a peaceful experience about saving our home world.
- 6

Card Survival: Fantasy Forest
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Indie and Adventure with Theo's World.
Card Survival: Fantasy Forest is a card-based deep survival simulator and the next installment in the Card Survival Series. Carve yourself a home in a primordial forest that has a will of its own. A day-to-day life simulator in a world where nature reigns with mystery, beauty and sometimes cruelty.
- 7

Dinkum
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Indie and Adventure with Theo's World.
Dinkum is a survival life simulation game set on an island inspired by the rugged Australian outback. Farm, hunt, mine, fish, and forage to gather resources, expand your town, and discover what makes Dinkum so special—either solo or with friends.
- 8

Project Castaway
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Action and Adventure with Theo's World.
Project Castaway is a survival crafting title set in the Pacific Ocean. Live the life of a stranded castaway, with only yourself - and the island's inhabitants - for company! Sail the ocean, hunt, explore unique islands and gather resources as you fight for survival.
- 9

Soldier in the darkness
Single-player alternative to Theo's World — playable solo, no multiplayer required. Shares Action and Indie with Theo's World.
You have been sent to an island where more than four hundred visitors have turned into zombies.