You will need at least 161 MB of free disk space to install 999. Make sure your have 170 MB of free disk space in order to install 999. 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 999. 999 system requirements state that you will need at least 1 GB of RAM. If possible, make sure your have 2 GB of RAM in order to run 999 to its full potential.
999 will run on PC system with XP or later and upwards.