An Intel Core i5-4590 CPU is required at a minimum to run CuVRball. CuVRball system requirements state that you will need at least 4 GB of RAM. You will need at least 500 MB of free disk space to install CuVRball. The cheapest graphics card you can play it on is an NVIDIA GeForce GTX 970.
CuVRball will run on PC system with Windows 7 SP1, Windows 8.1, Windows 10 and upwards.