PC requirements

Legend of Grimrock System Requirements

Legend of Grimrock needs at least Dual Core 2GHz Intel or 2.8GHz AMD, 2 GB RAM and ATI Radeon X1600 or NVIDIA GeForce 7600 or better (256MB graphics memory or more. Shader Model 3.0 needs to be supported). Minimum supported resolutions 1280x720 and 1024x768. graphics. For the recommended experience you want Quad Core 2.66GHz Intel or 3.2GHz AMD, 4 GB RAM and Graphics card supporting OpenGL 2.1 or later. ATI Radeon HD 2900 or NVIDIA GeForce 8800 or better. Shader Model 3.0 needs to be supported) graphics.

Verified Sources: Steam store listing
Legend of Grimrock minimum and recommended PC specifications
Component Minimum Recommended
Operating system Windows XP Service Pack 3 Windows Vista or Windows 7
Processor Dual Core 2GHz Intel or 2.8GHz AMD Quad Core 2.66GHz Intel or 3.2GHz AMD
Memory 2 GB RAM 4 GB RAM
Graphics ATI Radeon X1600 or NVIDIA GeForce 7600 or better (256MB graphics memory or more. Shader Model 3.0 needs to be supported). Minimum supported resolutions 1280x720 and 1024x768. Graphics card supporting OpenGL 2.1 or later. ATI Radeon HD 2900 or NVIDIA GeForce 8800 or better. Shader Model 3.0 needs to be supported)
Storage 1 GB HD space 1 GB HD space
Not sure how your PC compares? Use the Can I Run It checker — pick your CPU and GPU and it tells you which column you land in.

Other platforms

Legend of Grimrock is also available on these systems, where hardware is fixed and no per-PC check is needed:

Nintendo Switch iOS Linux Mac PC (Microsoft Windows)

Quick answers

Running Legend of Grimrock on PC

Can my PC run Legend of Grimrock?
Compare your CPU, GPU and RAM against the minimum column below. If your parts match or beat every minimum row, the game will launch — though you may need to lower settings. Matching the recommended column is what gets you 60fps at 1080p.
How much storage does Legend of Grimrock need?
1 GB HD space
What is the difference between minimum and recommended specs?
Minimum means the game starts and is playable, usually at 30fps on low settings at 1080p. Recommended is the developer's target for a smooth 60fps experience at high settings.