In terms of game file size, you will need at least 100 MB of free disk space available. To play Prophour23 you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz. However, the developers recommend a CPU greater or equal to an Intel Core 2 Duo T7250 to play the game. Provided that you have at least an NVIDIA GeForce 6200 graphics card you can play the game. But, according to the developers the recommended graphics card is an NVIDIA GeForce 510. Prophour23 system requirements state that you will need at least 1 GB of RAM. Additionally, the game developers recommend somewhere around 4 GB of RAM in your system.
Prophour23 will run on PC system with Windows XP or later and upwards. Additionally it has Mac and Linux versions.