Plith system requirements state that you will need at least 1 GB of RAM. To play Plith you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz. 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 150 MB of free disk space available.
Plith will run on PC system with Windows XP or newer and upwards. Additionally it has a Mac version.