My son is looking for some new PC games to play and doesn't have enough money to buy himself them just now.  (For new games, he earns the money to buy them through chores.)

I know this is probably wishful thinking but is there anywhere that he could get full and legal downloads of PC games? It doesn't matter if they are old ones, as long as they are XP compatible. I won't stoop to downloading anything illegal though!

He's been playing trial game downloads at Yahoo! Games. However the trials get frustrating because you only get about an hour's gameplay with them and it's done. If I could find him something longer that would be great. He likes strategy and Final Fantasy type games.

Any ideas would be appreciated. Thanks!