Flats Full of Cats Wiki - System Requirements
Minimum
OSWindows 10 or newer
Processor64-bit processor required
Memory—
Graphics—
Storage—
Recommended
OS—
Processor—
Memory—
Graphics—
Storage—
Source: Official Steam listing
Confirmed via the official Steam listing. Detailed RAM/GPU/storage figures have not been published, though the game also natively supports SteamOS and Linux without requiring Proton.