Games like Opus Building
Games like Opus Building include A Plague Tale: Requiem, Outer Wilds, Indiana Jones and the Great Circle, Amnesia: Rebirth, and Quern - Undying Thoughts. We matched them by the tags players give Opus Building on Steam (Adventure, Action-Adventure, Sandbox, Interactive Fiction, and Puzzle): closest matches first, and among equally close ones the better-known games.

A Plague Tale: Requiem
Shared: Adventure · Action-Adventure · Exploration

Outer Wilds
Shared: Adventure · Exploration · Puzzle

Indiana Jones and the Great Circle
Shared: Action-Adventure · Adventure · Puzzle

Amnesia: Rebirth
Shared: Action-Adventure · Puzzle · Adventure

Quern - Undying Thoughts
Shared: Adventure · Puzzle · Exploration

Blue Prince
Shared: Puzzle · Exploration · Adventure

Big Walk
Shared: Adventure · Puzzle · Exploration

UNCHARTED™: Legacy of Thieves Collection
Shared: Adventure · Action-Adventure · Puzzle

Tomb Raider Game of the Year
Shared: Adventure · Action-Adventure · Exploration

Rise of the Tomb Raider™
Shared: Adventure · Action-Adventure · Exploration

Killer Frequency
Shared: Adventure · Interactive Fiction · Puzzle

Black Desert
Shared: Sandbox · Exploration · Action-Adventure

What Remains of Edith Finch
Shared: Adventure · Exploration · Atmospheric

Firewatch
Shared: Adventure · Atmospheric · Exploration

Kena: Bridge of Spirits
Shared: Adventure · Action-Adventure · Exploration

Lorelei and the Laser Eyes
Shared: Adventure · Puzzle · Exploration

Hello Neighbor
Shared: Sandbox · Action-Adventure · First-Person

Amanda the Adventurer
Shared: Puzzle · Adventure · First-Person

PEAK
Shared: Adventure · Exploration · 3D

Riven
Shared: Adventure · Puzzle · Exploration

Amanda the Adventurer 2
Shared: Adventure · Interactive Fiction · Puzzle

Inside the Backrooms
Shared: Puzzle · Adventure · Exploration

Hello Neighbor 2
Shared: Adventure · Action-Adventure · Puzzle

The Room 4: Old Sins
Shared: Adventure · Puzzle · Exploration