In terms of game file size, you will need at least 2 GB of free disk space available. Pacify system requirements state that you will need at least 4 GB of RAM. If possible, make sure your have 8 GB of RAM in order to run Pacify to its full potential. To play Pacify you will need a minimum CPU equivalent to an Intel Core i5-650. Whereas, an Intel Core i7-7Y75 is recommended in order to run it. Provided that you have at least an NVIDIA GeForce 8500 GT graphics card you can play the game. But, according to the developers the recommended graphics card is an AMD Radeon R5 M330.
Pacify will run on PC system with Windows 7 - 64 bit and upwards. Additionally it has a Mac version.