Games like Altiros
Games like Altiros include Scrap Mechanic, ARK: Survival Ascended, Satisfactory, Valheim, and Rust. We matched them by the tags players give Altiros on Steam (Sandbox, Base Building, Voxel, Crafting, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

Scrap Mechanic
Shared: Sandbox · Building · Base Building

ARK: Survival Ascended
Shared: Base Building · Open World · Crafting

Satisfactory
Shared: Base Building · Crafting · Open World

Valheim
Shared: Base Building · Crafting · Open World

Rust
Shared: Crafting · Sandbox · Open World

Enshrouded
Shared: Base Building · Open World · Crafting

Terraria
Shared: Sandbox · Crafting · Building

7 Days to Die
Shared: Base Building · Open World · Voxel

Sons Of The Forest
Shared: Base Building · Open World · Crafting

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

V Rising
Shared: Base Building · Open World · Crafting

Core Keeper
Shared: Sandbox · Open World · Crafting

Once Human
Shared: Open World · Base Building · Crafting

Trove
Shared: Sandbox · Voxel · Open World

Palworld
Shared: Open World · Crafting · Base Building

Kenshi
Shared: Sandbox · Open World · Crafting

Factorio
Shared: Base Building · Sandbox · Crafting

Raft
Shared: Crafting · Base Building · Open World

The Forest
Shared: Crafting · Open World · Building

Medieval Dynasty
Shared: Crafting · Building · Base Building

Slime Rancher
Shared: Sandbox · Open World · Cute

Portal Knights
Shared: Sandbox · Crafting · Building

ASTRONEER
Shared: Base Building · Open World · Sandbox

Dune: Awakening
Shared: Base Building · Sandbox · Crafting