Feral Heart

So, recently, whenever I try to play FH, the game will only last for a few minutes and then my screen will flicker briefly and my computer crashes. This problems also occurs with similar games, so it's not a FH-specific problem. My computer is a bit old, so I'm thinking that FH is just too much for it to handle anymore, I guess? I'd really like to see if there is anything I can do to fix this, because it's pretty much impossible for me to play, and it's definitely not good for my computer. So anyway, any suggestions? Please help!