You've forbidden opera because you can use some features on it. But why can't I play in Internet Explorer 8 and 7? And I can't rollback to Internet Explorer 6 because I have XP with service pack 3. Make something with IE. It's boring to raise rabbits with Mozilla Firefox.
I can't play in Enigma or Maxton or any other browser because they're using IE explorer engine.
So, take care of this issue.