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Castaway Slime playtest
by AZS
Castaway Slime is a survival game where a shipwrecked slime must survive 30 days until a rescue ship arrives. The game features survival elements such as hunting, farming, cooking, and mining, along with RPG-style equipment, stats, and skills. Online co-op supports up to 4 players.
Anyone with a Steam account can join, and it's free.
- Access
- Instant
- On playtest since
- Oct 29, 2026
- Planned release
- To be announced
- Developer
- AZS
- Platforms
- Windows
- Players
- Co-op, Multiplayer, Online co-op, Single-player
- Languages
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
How to join the Castaway Slime playtest
- Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
- Use the Castaway Slime playtest signup there. You're in straight away, with nothing to pay.
- The playtest shows up in your Steam library, ready to install and play.
New to playtests? How Steam playtests work
About Castaway Slime
Castaway Slime is a survival game where a shipwrecked slime must survive for 30 days until a rescue ship arrives.
The sun starts to set after about 4–5 minutes, so you need to use your time wisely.
The game features survival elements such as hunting, farming, cooking, and mining, along with RPG-style equipment, stats, and skills.
It also supports online co-op for up to 4 players.
■ Survive for 30 Days!
A slime's day is short.
Hunt, cook, farm... mine in the cave, and it's already time to sleep.
■ You Need to Get Stronger.
Offer your loot at the altar to earn gold and upgrade your equipment.
You can also learn or enhance skills using the diamonds you rarely find.
■ If It's Too Hard, Team Up!
Team up with up to 4 slimes!
You can join a public game, or use a join code to join a private game.
From the game's Steam page.
