PC requirements

Serious Sam: The Random Encounter System Requirements

Serious Sam: The Random Encounter needs at least 2.0Ghz or faster processor, 1GB RAM and 256MB Video Memory or higher, DirectX 8 or later graphics.

Verified Sources: Steam store listing
Serious Sam: The Random Encounter minimum and recommended PC specifications
Component Minimum
Operating system Windows XP, Vista, 7 [Not Windows 10]
Processor 2.0Ghz or faster processor
Memory 1GB RAM
Graphics 256MB Video Memory or higher, DirectX 8 or later
Storage 100MB free 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

Serious Sam: The Random Encounter is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Serious Sam: The Random Encounter on PC

Can my PC run Serious Sam: The Random Encounter?
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 Serious Sam: The Random Encounter need?
100MB free space