PC requirements

Citizens of Earth System Requirements

Citizens of Earth needs at least 2.2 GHz Dual Core, 2 GB RAM and 512 MB NVIDIA GeForce 9800 / ATI Radeon HD 2600 XT graphics. For the recommended experience you want 2.8 GHz Dual Core, 4 GB RAM and 1 GB NVIDIA 460 / AMD Radeon 5870 graphics.

Verified Sources: Steam store listing
Citizens of Earth minimum and recommended PC specifications
Component Minimum Recommended
Operating system Windows XP or above Windows Vista or above
Processor 2.2 GHz Dual Core 2.8 GHz Dual Core
Memory 2 GB RAM 4 GB RAM
Graphics 512 MB NVIDIA GeForce 9800 / ATI Radeon HD 2600 XT 1 GB NVIDIA 460 / AMD Radeon 5870
Storage 2 GB available space 2 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

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

Quick answers

Running Citizens of Earth on PC

Can my PC run Citizens of Earth?
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 Citizens of Earth need?
2 GB available 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.