Games like PsychWorld
Games like PsychWorld include Terraria, ARK: Survival Evolved, Valheim, Rust, and The Forest. We matched them by the tags players give PsychWorld on Steam (Voxel, Procedural Generation, Crafting, Open World Survival Craft, and Open World): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Open World Survival Craft · Crafting · Pixel Graphics

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

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

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

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

Core Keeper
Shared: Open World · Crafting · Pixel Graphics

Forager
Shared: Open World Survival Craft · Crafting · Pixel Graphics

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

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

Trove
Shared: Voxel · Procedural Generation · Open World

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

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

Satisfactory
Shared: Crafting · Open World · Base Building

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

Starbound
Shared: Open World Survival Craft · Crafting · Pixel Graphics

Enshrouded
Shared: Open World · Crafting · Base Building

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

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

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

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

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

Romestead
Shared: Crafting · Procedural Generation · 2D

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

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