Firmament

Steampunk puzzle adventure across three realms of mysterious machines

Cyan Worlds, Inc. · Released May 18, 2023

Reviews: Mostly Positive; 72% of 1,643
Recent reviews: Not enough recent
Playing now: 4; right now
Steam Deck: Verified
Last update: 6 months ago; Mar 13, 2026

What is Firmament?

This single-player puzzle adventure takes place in three steampunk realms that seem abandoned. You explore each realm, use a device called the Adjunct to operate machinery and solve puzzles, and investigate what the realms are for. You can play in VR or on a standard display.

For you if...

+you enjoy slow exploration through atmospheric mechanical spaces
+you want a puzzle adventure you can play in VR

Not for you if...

−you want action rather than exploration and puzzle solving
−you prefer interacting with objects in ways beyond one tool

What players say

72% of 1,643 reviews are positive

Players praise the scenery and atmosphere. Many find the puzzles simpler and less varied than expected, and complain about backtracking and a story that is largely explained near the end.

Screenshots and trailer

Firmament system requirements

As published by the developer.

Minimum

OS: Windows 10
Processor: AMD Ryzen 7 2700X Eight-Core Processor (16 CPUs), ~3.7GHz; Intel i5 7000 series
Graphics: AMD Radeon RX 5700XT; NVIDIA GeForce GTX 1070 8GB
Memory: 16 GB RAM
Storage: 20 GB available space
DirectX: Version 12

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows, macOS
Achievements: 28
Steam features: Cloud saves, Family Sharing, VR

Steam Deck: Verified

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck
External controllers are not supported for the primary player

Multiplayer and co-op

Single-player

Languages

Full audio: English. Text only: French, Italian, German, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America.