I'm not going to try to change the subject/ change ANYBODY'S opinion for anything, but I used to use XP. At first, the computer tried to crash itself while running FH, so I had to uninstall it. Eventually I got a new computer, this time with Windows 8, and it ran FeralHeart smoothly. FeralHeart might not be installing because either your browser/ Antivirus won't accept it, or it's just that XP is not compatible with it. This might also depend on what brand of computer you have (HP, Dell, etc), or if you have a Desktop or a Laptop.