‘Anime-style survival adventure game’ Castaway Diary: Portal to the Unknown Isles announced for PC

REMIMORY, the studio that created RemiLore: Lost Girl in the Lands of Lore, is working on a new game called Castaway Diary: Portal to the Unknown Isles. Described as an anime-style survival adventure, it’s planned to enter Early Access on PC through Steam in 2026.

REMIMORY recently announced a new game that combines the challenge of survival games with the colorful and optimistic style of anime. The game’s Steam page is now available, and the developers are excited to connect with players. They encourage everyone to add the game to their wishlist and follow its development.

Here is an overview of the game, via its Steam page:

About

A young girl finds herself alone on a strange island and has to figure out how to survive in this new place. Luckily, she and the other girls there remain hopeful and optimistic, facing each day with courage and a belief in a brighter future. It’s not a sad or frightening situation, but one filled with resilience and good spirits.

I’m so excited to explore this island! You can choose to go it alone and just enjoy the peace, or team up with friends to tackle everything it throws at you. Either way, it sounds like a really amazing and uplifting experience. The best part is, even while you’re having fun, you’re always working towards getting back home. I can’t wait to start my adventure today!

Key Features

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 Islands 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!

Watch the announcement trailer below. View the first screenshots at the gallery.