Games like ARK: Aquatica
Games like ARK: Aquatica include ARK: Survival Evolved, Rust, Raft, Terraria, and Valheim. We matched them by the tags players give ARK: Aquatica on Steam (Open World Survival Craft, Survival, Multiplayer, Open World, and Dinosaurs): closest matches first, and among equally close ones the better-known games.

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

Rust
Shared: Survival · Multiplayer · Open World Survival Craft

Raft
Shared: Survival · Open World Survival Craft · Multiplayer

Terraria
Shared: Open World Survival Craft · Survival · Multiplayer

Valheim
Shared: Open World Survival Craft · Survival · Open World

ARK: Survival Ascended
Shared: Survival · Multiplayer · Open World

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

Once Human
Shared: Open World · Multiplayer · Survival

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

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

Sons Of The Forest
Shared: Survival · Multiplayer · Open World

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

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

Grounded
Shared: Survival · Multiplayer · Open World Survival Craft

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

Satisfactory
Shared: Open World · Multiplayer · Crafting

ASTRONEER
Shared: Open World Survival Craft · Multiplayer · Open World

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

Scrap Mechanic
Shared: Survival · Multiplayer · Building

Stranded Deep
Shared: Open World Survival Craft · Survival · Multiplayer

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

ICARUS
Shared: Open World Survival Craft · Survival · Multiplayer

Subsistence
Shared: Open World Survival Craft · Survival · Multiplayer

Subnautica
Shared: Open World Survival Craft · Survival · Open World