Lionheart system requirements state that you will need at least 2 GB of RAM. An Intel Pentium 4 2.66GHz CPU is required at a minimum to run Lionheart. The cheapest graphics card you can play it on is an NVIDIA GeForce 510. You will need at least 4 GB of free disk space to install Lionheart.
Lionheart will run on PC system with Windows Vista, 7, 8, or 10 and upwards.