Games like QANGA
Games like QANGA include No Man's Sky, Grand Theft Auto V Legacy, Rust, ASTRONEER, and Red Dead Redemption 2. We matched them by the tags players give QANGA on Steam (Third Person, Shooter, Futuristic, Realistic, and Open World): closest matches first, and among equally close ones the better-known games.

No Man's Sky
Shared: Open World · Space · Open World Survival Craft

Grand Theft Auto V Legacy
Shared: Open World · Third Person · Shooter

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

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

Red Dead Redemption 2
Shared: Open World · Realistic · Shooter

Elite Dangerous
Shared: Open World · Space · Space Sim

Terraria
Shared: Open World Survival Craft · Sandbox · Open World

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

EVE Online
Shared: Open World · Space Sim · Exploration

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

Starfield
Shared: Open World · Space · Third Person

Fallout 4
Shared: Open World · Shooter · Exploration

Empyrion - Galactic Survival
Shared: Space · Open World · Open World Survival Craft

Just Cause 2
Shared: Third Person · Open World · Shooter

Starbound
Shared: Open World Survival Craft · Space · Sandbox

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

Just Cause™ 3
Shared: Open World · Shooter · Third Person

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

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

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

Grand Theft Auto V Enhanced
Shared: Open World · Shooter · Third Person

The Isle
Shared: Open World · Realistic · Third Person

The Long Dark
Shared: Open World · Open World Survival Craft · Exploration

Arma 3
Shared: Shooter · Realistic · Open World