Games like Good Heavens!
Games like Good Heavens! include Valheim, Terraria, Palworld, Raft, and ARK: Survival Evolved. We matched them by the tags players give Good Heavens! on Steam (Open World Survival Craft, RPG, Online Co-Op, Base Building, and Action): closest matches first, and among equally close ones the better-known games.

Valheim
Shared: Open World Survival Craft · Online Co-Op · Open World

Terraria
Shared: Open World Survival Craft · Sandbox · Crafting

Palworld
Shared: Open World Survival Craft · Open World · Online Co-Op

Raft
Shared: Open World Survival Craft · Open World · Base Building

ARK: Survival Evolved
Shared: Open World Survival Craft · Open World · Base Building

Once Human
Shared: Open World · Open World Survival Craft · Action

Enshrouded
Shared: Base Building · Open World · Online Co-Op

Green Hell
Shared: Open World Survival Craft · Online Co-Op · Open World

Rust
Shared: Open World Survival Craft · Open World · Crafting

Don't Starve Together
Shared: Open World Survival Craft · Open World · Online Co-Op

Grounded
Shared: Open World Survival Craft · Base Building · Online Co-Op

RuneScape: Dragonwilds
Shared: Open World Survival Craft · Open World · Online Co-Op

Dune: Awakening
Shared: Open World Survival Craft · Base Building · Exploration

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

7 Days to Die
Shared: Open World Survival Craft · Base Building · Open World

The Planet Crafter
Shared: Open World Survival Craft · Base Building · Online Co-Op

Core Keeper
Shared: Open World · Exploration · Base Building

Nightingale
Shared: Open World Survival Craft · Online Co-Op · Open World

Grounded 2
Shared: Base Building · Open World Survival Craft · Open World

ICARUS
Shared: Open World Survival Craft · Base Building · Online Co-Op

Starbound
Shared: Open World Survival Craft · Online Co-Op · Crafting

Conan Exiles Enhanced
Shared: Open World Survival Craft · Open World · RPG

Satisfactory
Shared: Base Building · Open World · Crafting

Abiotic Factor
Shared: Open World Survival Craft · Online Co-Op · Base Building