Games like Crestfallen: Medieval Survival
Games like Crestfallen: Medieval Survival include Rust, Terraria, ARK: Survival Evolved, Don't Starve Together, and Raft. We matched them by the tags players give Crestfallen: Medieval Survival on Steam (Survival, Crafting, Adventure, Open World Survival Craft, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Rust
Shared: Survival · Crafting · Multiplayer

Terraria
Shared: Survival · Open World Survival Craft · Multiplayer

ARK: Survival Evolved
Shared: Survival · Open World Survival Craft · Multiplayer

Don't Starve Together
Shared: Survival · Open World Survival Craft · Multiplayer

Raft
Shared: Survival · Open World Survival Craft · Crafting

Valheim
Shared: Survival · Open World Survival Craft · Crafting

Once Human
Shared: Survival · Open World · Multiplayer

Palworld
Shared: Survival · Open World · Open World Survival Craft

Conan Exiles Enhanced
Shared: Survival · Crafting · Open World

Project Zomboid
Shared: Survival · Open World Survival Craft · Multiplayer

The Forest
Shared: Survival · Open World Survival Craft · Crafting

ARK: Survival Ascended
Shared: Survival · Multiplayer · Crafting

7 Days to Die
Shared: Survival · Multiplayer · Open World Survival Craft

Starbound
Shared: Survival · Open World Survival Craft · Adventure

Green Hell
Shared: Survival · Open World Survival Craft · Multiplayer

Reign Of Kings
Shared: Survival · Open World Survival Craft · Crafting

Craftopia
Shared: Crafting · Survival · Open World

Hurtworld
Shared: Survival · Crafting · Open World Survival Craft

Miscreated
Shared: Survival · Open World Survival Craft · Multiplayer

Scrap Mechanic
Shared: Survival · Multiplayer · Crafting

Grounded
Shared: Survival · Multiplayer · Open World Survival Craft

Necesse
Shared: Open World Survival Craft · Survival · Multiplayer

Last Oasis
Shared: Survival · Adventure · Open World

RuneScape: Dragonwilds
Shared: Survival · Open World · Open World Survival Craft