About Unfathom

Unfathom is an Action, RPG, Strategy, and Early Access game developed by Eftsith Software, LLC. It was released on the Steam Store by Eftsith Software, LLC.

It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.

According to Steam’s category system, Unfathom supports the following features:

• Single-player
• Save Anytime
• Full controller support
• PvP
• Custom Volume Controls
• Co-op
• Multi-player
• Shared/Split Screen Co-op
• Remote Play Together
• Online PvP
• Cross-Platform Multiplayer
• Shared/Split Screen PvP
• Online Co-op
• Shared/Split Screen
• LAN Co-op
• Stereo Sound
• LAN PvP
• Adjustable Difficulty
• Camera Comfort
• Family Sharing
• Color Alternatives
• Keyboard Only Option

Media & Sceenshots

Watch the featured video for Unfathom and see the latest screenshots from the Steam Store.

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Soures & References

Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.

Unfathom data has been sourced from:

• Valve Corporation. (2026, March 27). Unfathom on Steam. Steam Store.
• Valve Corporation. (2026, March 27). Unfathom. Steam Community Hub.
• Eftsith Software, LLC.. (2025, October 31). Unfathom. Unfathom.