PC requirements

The Stanley Parable: Ultra Deluxe System Requirements

The Stanley Parable: Ultra Deluxe needs at least Intel Core i3 2.00 GHz or AMD equivalent, 4 GB RAM and NVIDIA GeForce 450 or higher with 1GB Memory graphics.

Verified Sources: Steam store listing
The Stanley Parable: Ultra Deluxe minimum and recommended PC specifications
Component Minimum
Operating system Windows 7 or higher 64bit
Processor Intel Core i3 2.00 GHz or AMD equivalent
Memory 4 GB RAM
Graphics NVIDIA GeForce 450 or higher with 1GB Memory
Storage 5 GB available 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

The Stanley Parable: Ultra Deluxe is also available on these systems, where hardware is fixed and no per-PC check is needed:

PlayStation 5 Xbox Series X|S Nintendo Switch PlayStation 4 Xbox One iOS Linux Mac PC (Microsoft Windows)

Quick answers

Running The Stanley Parable: Ultra Deluxe on PC

Can my PC run The Stanley Parable: Ultra Deluxe?
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 The Stanley Parable: Ultra Deluxe need?
5 GB available space