I was installing games, and thought that i forgot to click Install on one of them, so i went back, and Internet Explorer said the the page has expired, and that i need to resend the data, so i did, and now I have 2 Alien Attack games
Right, so i went to phpMyAdmin, table games, clicked browse, found the dupe entry, removed it. Everything seems fine now, just the game id's a bit outta order.