In terms of game file size, you will need at least 2 GB of free disk space available. The cheapest graphics card you can play it on is an NVIDIA GeForce GT 730. Futhermore, an NVIDIA GeForce GTX 970 is recommended in order to run The Subject with the highest settings. The Subject system requirements state that you will need at least 4 GB of RAM. Additionally, the game developers recommend somewhere around 6 GB of RAM in your system. To play The Subject you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz. Whereas, an Intel Pentium 4 3.00GHz is recommended in order to run it.
The Subject will run on PC system with Windows 7 and upwards. Additionally it has a Linux version.