As long as it is for non commercial use, under EU law you can use whatever copyrighted material you wish!
It depends how you define non commercial, it isn't as simple as non profit, but hey, playing in a computer game is reasonably safe (Unless your American!)
But the safest thing to do, is to ask permission via email, chances are they won't respond, and as long as you have that email asking permission, you can do whatever you want, including selling the product, if you ask permission and they haven't said no, it's yours to use! In other words, if you are really that worried, just ask to cover yourself