You will need at least 200 MB of free disk space to install Killbox. The cheapest graphics card you can play it on is an NVIDIA GeForce 6200. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run Killbox. Killbox system requirements state that you will need at least 1 GB of RAM.
Killbox will run on PC system with Microsoft Windows 7 / 8 / 10 and upwards. Additionally it has a Mac version.