Games like Project Castaway
Games like Project Castaway include Valheim, Raft, Terraria, Rust, and ARK: Survival Evolved. We matched them by the tags players give Project Castaway on Steam (Open World Survival Craft, Online Co-Op, Exploration, Survival, and Sandbox): closest matches first, and among equally close ones the better-known games.
Valheim
Shared: Open World Survival Craft · Online Co-Op · Survival
Raft
Shared: Open World Survival Craft · Co-op · Survival
Terraria
Shared: Open World Survival Craft · Survival · Sandbox
Rust
Shared: Open World Survival Craft · Survival · Open World
ARK: Survival Evolved
Shared: Open World Survival Craft · Survival · Open World
Once Human
Shared: Co-op · Open World Survival Craft · Survival
Grounded
Shared: Co-op · Open World Survival Craft · Survival
Green Hell
Shared: Open World Survival Craft · Survival · Online Co-Op
Palworld
Shared: Open World Survival Craft · Survival · Online Co-Op
ICARUS
Shared: Open World Survival Craft · Survival · Online Co-Op
Don't Starve Together
Shared: Open World Survival Craft · Co-op · Survival
7 Days to Die
Shared: Open World Survival Craft · Survival · Online Co-Op
The Forest
Shared: Open World Survival Craft · Survival · Open World
The Planet Crafter
Shared: Open World Survival Craft · Online Co-Op · Co-op
Subnautica
Shared: Open World Survival Craft · Survival · Exploration
Stranded Deep
Shared: Open World Survival Craft · Survival · Exploration
RuneScape: Dragonwilds
Shared: Open World Survival Craft · Co-op · Survival
ASTRONEER
Shared: Open World Survival Craft · Survival · Exploration
Core Keeper
Shared: Exploration · Survival · Open World
Abiotic Factor
Shared: Open World Survival Craft · Online Co-Op · Survival
No Man's Sky
Shared: Open World Survival Craft · Exploration · Open World
Grounded 2
Shared: Survival · Co-op · Open World Survival Craft
Sons Of The Forest
Shared: Co-op · Survival · Open World
Satisfactory
Shared: Co-op · Open World · Base Building