You will need at least 50 MB of free disk space to install Achromatic. The cheapest graphics card you can play it on is an Intel HD 3000. The minimum memory requirement for Achromatic is 1 GB of RAM installed in your computer. An Intel Core i3-530 CPU is required at a minimum to run Achromatic.
Achromatic will run on PC system with Windows XP SP2+ and upwards. Additionally it has a Mac version.