The cheapest graphics card you can play it on is an NVIDIA GeForce GTX 660. You will need at least 300 MB of free disk space to install Train Defense. An Intel Core 2 Duo U7600 CPU is required at a minimum to run Train Defense. Train Defense system requirements state that you will need at least 1 GB of RAM.
Train Defense will run on PC system with Windows 7 and upwards.
Show Train Defense system requirements on your site