You will need at least 100 MB of free disk space to install Keystones. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run Keystones. The cheapest graphics card you can play it on is an NVIDIA GeForce 510. Keystones system requirements state that you will need at least 256 MB of RAM.
Keystones will run on PC system with Windows 7 or later and upwards.