The cheapest graphics card you can play it on is an NVIDIA GeForce 6100. Hydroactive system requirements state that you will need at least 4 GB of RAM. In terms of game file size, you will need at least 500 MB of free disk space available. To play Hydroactive you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz.
Hydroactive will run on PC system with Windows XP or above and upwards.