Top similar games like I Thalassa:

While searching for a new home, an unexpected failure in your ship has left you stranded on a planet surprisingly similar to Earth. Discover a vast open world, hunt for food, develop technologies, and build yourself a new home to survive!

Stellar Archipelago is a third-person base builder with a space western flair. Gather resources, build colonies on miniature planets, and grow your population to prove habitability. Unlock the warp junction and open your frontier system to future settlers.

Explore the ice-encrusted ocean of Jupiter's moon Europa.

A tale of survival about two shipwrecked robots - ION and ANI - on their life-defining journey in this unique genre-mix of exploration, puzzle and survival.

Take the role of a plane crash survivor stranded somewhere in the Pacific Ocean. Come face to face with some of the most life threatening scenarios that will result in a different experience each time you play. Scavenge. Discover. Survive.

Sinking Eternity is a single-player underwater exploration RPG. Survive extreme depths, hide from dangerous sea creatures, and uncover the secrets of a civilization lost for millennia.

Harvest, Build, Craft and Explore the different biomes among massive trees, plants, and hostile creatures to survive and unlock the mysteries of an alien jungle in a first person sci-fi survival adventure.

Among the Trolls is a first-person survival-adventure game where the secret mysteries of Finnish forests are unraveled. Venture deep into the Finnish wilderness to uncover family truths and master the art of survival.

A sci-fi base building survival game, featuring raids, agriculture, intelligent AI, natural disasters and more.

"Escape Island: An exciting survival adventure! Your mission: Escape from a deserted island full of dangers. Explore, hunt and collect resources to survive. But beware of lurking threats! Use your intelligence and skills to overcome obstacles and escape!"

Discover Voltcube, an infinite, uniquely generated block universe. Create machines, explore a multitude of biomes, and build to your heart's content. Survival or creative, every playthrough offers a unique journey.

FarSky is a short survival game in the depths of the Ocean. Collect all the pieces of your submarine and reach back the surface.

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!

Natives is an open-world/sandbox game with survival elements that takes place pre-Christopher Columbus. The land is raw, nature is at its peak and the seasons are full of change.

Erzurum is a winter survival game which you will struggle against freezing temperatures, the wild nature, hunger and thirst.

Experience the beginning of learning how to survive in an alien jungle. Harvest, Build, Craft and Explore this first dense biome among massive trees, plants, and hostile creatures to survive. Learn the ropes, build a base, and craft essential tools to survive and unravel mysteries.

Discover the mysteries of the Atacama, explore the abandoned mining networks, evade the scorching sun and survive the environment in one of the most arid place in the world. Arid is a FREE survival game made by students from Breda University.

Realistic physics-based open-world survival game set in the future. Survival, crafting, exploration and base building are the main focus. Hunt for food and water and survive against environmental hazards. Combat is possible, but more defensive in nature.

Corruption spreads across the land, block by block. Gather resources, craft items and fight back in this procedurally generated sandbox world. Explore biomes, caves, islands, dimensions and build with your friends. Can you stop evil before it consumes everything?

Explore the beatiful world of Aiyana which is a procedurally generated, open world, survival crafting game with traditional RPG mechanics such as talent trees and spells

An open world VR game full of discovery and danger set in a beautifully vast landscape. Navigate the mysterious ruins and use your abilities to traverse and explore. Choose to play peacefully or upgrade your weapons by harvesting resources and build a base to call your home.

Craft your settlement, survive the cursed island, and uncover its dark mysteries. Strengthen your character by mastering new skills, learning recipes, and gaining favor with factions. Battle the Blight, a lingering curse of black magic that threatens to consume everything in its path.

A realistic prehistoric survival game where you play as Homo habilis or Homo erectus. Craft primitive tools, build shelter, hunt massive beasts, and survive the harsh forces of nature in a vast multiplayer world.

A sandbox open-world survival set in a dynamic world of floating islands, each with its own ecosystem and climate. Explore and thrive by strategically exploiting these environments. Harness energy, strategically farm, craft your airship and much more, while uncovering the mysteries of this world.

The conquest of the Solar System has begun – prove yourself as a space colonist! Pilot the spaceship, choose the planet you wish to inhabit and build your new home. However, remember that there are no rules or laws in outer space. Don't underestimate the danger and stay vigilant – enemies are near!

Embark on an epic sci-fi sandbox adventure across multiple planets in this 2D sidescroller. Explore, fight creatures, craft, and build in in a fully destructible world. Unleash the power of simulated elements, ride vehicles, and customize your character.

No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.

Explore the unknown procedurally-generated world of islands and seas. Fight enemies, farm materials, craft equipment, build your base, slay bosses and level up your character. Conquer the unknown with your friends.

Welcome to Graystone! Once believed to be the human race's next home, you are left alone after an asteroid hits the planet. Survive in an open-world environment, unfit for humans. Few resources remain, and must be rationed to survive. Will you band together, or fight to the survive?

Uncover ancient secrets, summon totemic magic, decode enigmatic messages, and explore the majestic Preseli mountains of Wales in this open world adventure inspired by a true story. Dare to embark on this journey and rediscover the lost secrets of a life lived with purpose and meaning!

The aliens have caused the oceans to rise, plunging the world into the abyss. Survive, craft, and explore this mysterious underwater world. Build your base, defend it against relentless waves of enemies, and dive deep to uncover the secret that could stop the alien invasion once and for all!