> Windows XP definitely only supports DirectX 9, I have no idea why people still have this OS, it's a defective OS prone to errors and viruses than Windows 7.
Like Jummy said, linux is a good way to go for old compatibilities for older games
Edit: not to mention the game prob run on dx11 around so definitively not Windows xp. A game being "PS1" graphic like doesn't mean it can run on older hardwares. Since the game is made under UE4, don't expect it to be fully functional everywhere x)