Top similar games like Castaway Diary: Portal to the Unknown Isles:

Immerse yourself in an epic Survival Action RPG adventure, exploring a vast fantasy fairy tale world to build your own sanctuary and survive against extraordinary mythical creatures. Enhance your equipment, weapons, and skills to battle ruthless empires and interdimensional visitors.

The beloved block-building RPG, DRAGON QUEST BUILDERS, is bringing its handy crafting features to Steam! Weave your own tale as you build your own unique buildings and towns to restore Alefgard to it's former glory!

A survival exploration game where you can explore islands, challenge various monsters and defeat powerful Bosses. Craft various weapons and items, place items, grow vegetables and fruits, and trade with merchants. Set sail in the harbor, encounter pirates, monsters and random events in the sea.

DRAGON QUEST BUILDERS™ 2 is a block-building RPG set in a fantasy land threatened by an evil cult. Explore, battle, build and harvest in the charming single-player campaign or build big projects in the online sandbox mode for up to 4-players.

The ultimate block building game.

Wispera is a procedurally generated, open-world sandbox survival game. Craft weapons to battle monsters at night, or expand your base and create a safe haven. If you prefer to remain mobile, travel away and explore new places. Whether you’re a monster hunter or a builder, the choice is yours!

The apocalypse has come, brought by pollution, wars and disease! Your mission is to save your land... or what’s left of it. Alone or with your friends gather, recycle, craft, build, plant, explore, fight & help survivors.

You are an adventurer, you need to explore this continent, make good use of the resources of this continent to arm yourself, explore this world full of monsters and unknown things and survive!

The long awaited 4th installment of the popular "Arland" series that had begun with the "Atelier Rorona"! In this new story, players will revisit the nostalgic world of Arland and embark on exciting journey of alchemy together with Rorona's daughter, Lulua.

Join the young king Evan as he sets out on an epic quest to found a new kingdom and, with the help of some new friends, unite his world, saving its people from a terrible evil.

The world of Elysia needs YOU! Join this cooperative, 3D sandbox action RPG to level up your character, craft epic weapons, conquer enemies in real-time, and build almost anything! Craft your adventure. Forge your hero. Become the ultimate Portal Knight!

Once a thriving alien world, now a vast desert—devoured by the relentless Swarm. These towering insect invaders have left only scattered oases and buried ruins. Grow food, craft powerful resources, and uncover lost secrets to push back against the tide and restore balance to a dying world.

A Shipwrecked Adventure is a free prologue immersing you into the vast world of Tinkerlands. Uncover the story of the first survivors on these mystical islands. Explore the breathtaking archipelago, craft essential tools, build your settlement, and strive to survive!

An open-world survival crafting RPG set among floating islands. Gather resources, craft powerful tools, unlock spirit abilities to soar between skybound realms and reclaim your lost godhood.

Begin a journey in the beautiful world! Build your own town anywhere and explore the myterious lands anytime. Nothing is impossible in the open world: Be a legendary warrior and 5-star chef at the same time!

Four villages in a war. You are the only hope for a peaceful life. Play as a knight in this cute open world RPG and loot through many different weapons, magical spells and bows. Become the strongest knight and end this war.

Planet Explorers is an open world sandbox adventure RPG game set on a distant planet. The game uses a new OpenCL calculated voxel system to allow players to change the terrain in any way, create new objects such as weapons, vehicles, objects, and do it anywhere.

"The promise begins." The "Dusk" series, a trilogy of RPG titles from Gust's popular Atelier series, tells the story of a world on the verge ruin, told from the perspective of its unique characters. The 1st title in the series "Atelier Ayesha" is now available as a deluxe version.

First release in the Arland series. The main character Rorona must save her Atelier from being closed by the Kingdom. Using Synthesis, Exploration, and Battle, gain recognition for the Atelier and save it from being closed.

Embark on a journey through the Old Kingdom in Realms of Magic - a sandbox RPG where you customize your character, choose your path, and immerse yourself in the fantasy world as a knight, wizard, miner, lumberjack, farmer, and more. After all, this is YOUR adventure.

A sandbox survival RPG set on fully spherical hex worlds. Crash-land on an uncharted planet, craft and build to survive, uncover what infected the solar system, then build a ship and fly seamlessly to other planets. No loading screens. No edges.

Help Terry and his dog survive on their adventure across a charming world of floating islands. Gather, Craft, Build and Battle in a classic RPG adventure to piece together the mystery of how their world fell apart.

Explore, Adventure, Craft, Build, Survive. How will you shape your world? Astral Terra is a Smooth Voxel, Procedurally Generated Open World game with RPG and Survival Elements!

Build incredible structures with powerful tools. Explore the world with all players on one server. Battle bosses, farm, craft, and socialize with friends. How will you shape DreamWorld?

Dark and Light is a vast sandbox survival RPG set in a world dominated by powerful elemental forces. Find your way in a meticulously crafted world, featuring breathtaking landscapes, a wide variety of mythical creatures, and limitless possibility to craft, build, and unlock dozens of powerful weapons, spells, and skills.

The concept of this title, the latest in the series to depict a new "Atelier" world, is "True-to-life youths that develop together, even if just a little bit".

Craftopia is the brand new multiplayer survival action game made in Japan. We combined many features we find enjoyable, such as hunting, farming, hack-and-slash, building, automation to develop this game.

In XenoHaven, gather resources to build shelters, enslave alien beasts to work for you, and run restaurants and shops. Delve into dark underground dungeons, defeat swarming insectoids and mighty bosses, and craft powerful gear to conquer the alien world.

A top-down sandbox RPG where the creatures you raise physically change as you feed them. Hatch eggs, feed six elements to steer how each one evolves and what it looks like, then chain elemental reactions in real-time fights. Explore, loot, and theorycraft your party. Solo or online co-op.

Dragon and Home is a sandbox MMORPG where players can choose freely how they desire to play. Whether you want to play as a courageous adventurer, or you want to experience the tranquil rural lifestyles, growing plants, and feeding animals with your friends in the Homeland, you can find it all.