In terms of game file size, you will need at least 200 MB of free disk space available. An Intel Core 2 Quad Q8300 CPU is required at a minimum to run Cavyrn. Cavyrn system requirements state that you will need at least 3 GB of RAM. The cheapest graphics card you can play it on is an NVIDIA GeForce 6100.
Cavyrn will run on PC system with Windows 10 and upwards.