Caligo system requirements state that you will need at least 4 GB of RAM. You will need at least 10 GB of free disk space to install Caligo. To play Caligo you will need a minimum CPU equivalent to an Intel Core i3-4010U. The cheapest graphics card you can play it on is an NVIDIA GeForce GTX 660.
Caligo will run on PC system with 64 Bit Windows 7, 8 or 10 and upwards.