Gravitron 2 system requirements state that you will need at least 128 MB of RAM. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run Gravitron 2. The cheapest graphics card you can play it on is an NVIDIA GeForce 6100. You will need at least 30 MB of free disk space to install Gravitron 2.
Gravitron 2 will run on PC system with Microsoft Windows® XP or Vista and upwards.