Ya know...
If you had replaced the words "Runescape" with some other name like Middle Earth or something of the sort, you would have had no problems with people rating it down for the game. There were also little to no references to the game (just the mage with the ice)
It's a good movie though.
PS: Runescape is not the name of the world it's the name of the game. The real name is like Gelienor or something... (I used to play this worthless game)