Games like Gombo
Games like Gombo include Terraria, Don't Starve Together, Valheim, Raft, and Rust. We matched them by the tags players give Gombo on Steam (Online Co-Op, Survival, Open World Survival Craft, Crafting, and 2D): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Open World Survival Craft · Survival · 2D

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

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

Raft
Shared: Survival · Open World Survival Craft · Crafting

Rust
Shared: Survival · Crafting · Open World Survival Craft

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

Grounded
Shared: Survival · Open World Survival Craft · Co-op

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

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

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

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

Once Human
Shared: Survival · Open World Survival Craft · Co-op

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

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

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

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

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

Grounded 2
Shared: Survival · Adventure · Open World Survival Craft

Core Keeper
Shared: Survival · Crafting · Exploration

7 Days to Die
Shared: Survival · Open World Survival Craft · Online Co-Op

Dune: Awakening
Shared: Survival · Open World Survival Craft · Adventure

Don't Starve
Shared: Survival · Open World Survival Craft · Crafting

Subnautica
Shared: Survival · Open World Survival Craft · Crafting

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