PC requirements

Spore: Galactic Adventures System Requirements

Spore: Galactic Adventures needs at least 2.0 GHz P4 Processor or equivalent, (XP) 512MB (Vista) 768 MB of RAM and 128MB Video Card with support for Pixel Shader 2.0 graphics.

Verified Sources: Steam store listing
Spore: Galactic Adventures minimum and recommended PC specifications
Component Minimum
Processor 2.0 GHz P4 Processor or equivalent
Memory (XP) 512MB (Vista) 768 MB
Graphics 128MB Video Card with support for Pixel Shader 2.0
Storage At least 2GB of hard disk space without creations
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

Spore: Galactic Adventures is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Spore: Galactic Adventures on PC

Can my PC run Spore: Galactic Adventures?
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 Spore: Galactic Adventures need?
At least 2GB of hard disk space without creations