In terms of game file size, you will need at least 200 MB of free disk space available. The cheapest graphics card you can play it on is an NVIDIA GeForce 6200. hack_me system requirements state that you will need at least 512 MB of RAM. An Intel Core 2 Duo E8400 CPU is required at a minimum to run hack_me.
hack_me will run on PC system with Microsoft® Windows® Vista / 7 and upwards.