NetherWorld system requirements state that you will need at least 4 GB of RAM. To play NetherWorld you will need a minimum CPU equivalent to an Intel Core 2 Duo E4600. The cheapest graphics card you can play it on is an NVIDIA GeForce 510. In terms of game file size, you will need at least 1 GB of free disk space available.
NetherWorld will run on PC system with Windows 7 64-bit and upwards. Additionally it has Mac and Linux versions.