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Portal Jubilee Party in a Chamber

If you could have a Jubliee street party in a Portal chamber, it could look a bit like this. So basically it's two Portal co-op robots wearing novelty crowns, jigging about behind a Union Jack flag, don't laugh!...
It's a walk through level, if your're in the celebration mood you could always colour in the Union Jack with the provided gel, shoot from the platform to the left.