Seoul-based developer REMIMORY has announced Castaway Diary: Portal to the Unknown Isles, a new anime-style survival adventure game for PC via Steam. Castaway Diary: Portal to the Unknown Isles will launch in Steam Early Access later in 2026.
Here’s an overview of the game, via Steam:
Stranded on a mysterious, unknown island, a young girl must learn to navigate an unfamiliar world. But life here is far from dark or gloomy! Fueled by positivity and bright spirits, these girls refuse to give up, always looking forward to a better tomorrow.
Whether you choose to enjoy the island’s freedom solo or team up with others to overcome challenges, a heartwarming and vibrant adventure awaits. Hold onto the hope of returning home and begin your journey today!
A World of Activities
From gathering and fishing to cooking and tailoring—use the island’s natural resources to craft essentials and enjoy a bountiful lifestyle. With a reliable mount by your side, you can roam every corner of the vast island with ease.
Uncharted Island and Dungeons
Discover new lands and venture into mysterious dungeons hidden across the archipelago. Experience the thrill of the hunt as you take on a variety of adorable monsters.
Build Your Dream Home
Go beyond simple survival and create a space that is uniquely yours. Decorate your home inside and out, tend to a flourishing farm, and fully embrace the peaceful rhythm of island life.
Customize Your Style
Craft a wide array of stunning and vibrant costumes. While the girls are already charming, your personal touch and fashion sense will make your character truly shine.
More Fun Together in Multiplayer
A quiet solo getaway is wonderful, but the joy is doubled when shared with friends! Build houses together, conquer challenging dungeons, and create unforgettable memories as a team.
Start your very own special island adventure with the girls right now!
