, your system needs to meet the requirements of the base game while accounting for the additional storage used by the expansion. Note that as of January 1, 2024 , the Steam Client officially supports only Windows 10 and later versions. PC System Requirements (Windows) The expansion typically requires about of total available space when installed with the base game. Civilization Support Minimum Requirements Recommended Requirements Windows 10/11 (64-bit) Windows 10/11 (64-bit) Intel Core 2 Duo 1.8 GHz / AMD Athlon X2 64 2.0 1.8 GHz Quad Core CPU 256 MB ATI Radeon HD 3650 / nVidia 8800 GT AMD HD5000 / nVidia GT400 series Version 11 Version 11 13 GB available space 13 GB available space macOS System Requirements February 15, 2024

Sid Meier's Civilization: Beyond Earth - Rising Tide on Steam

Always download from official stores (Steam, GOG, Mac App Store). Third-party key resellers may provide invalid or region-locked Rising Tide keys that fail to activate. Safe travels, Governor.

Players can mix Purity, Harmony, and Supremacy paths.

Solution: Gatekeeper issue. Go to System Preferences → Security & Privacy → Allow apps from “App Store and identified developers.” Then run xattr -cr /Applications/Civilization\ Beyond\ Earth.app in Terminal.