A guy lined the inside of a coke can with photographic paper, poked a hole in the side and left it near the Clifton Suspension Bridge for 6 months. The trails in the sky are from the sun over that time, the gaps being when clouds obscured the sun.
I suppose this game don't know the difference between GB and MB... "it's just a letter, who cares about it, he has only 2 of it anyway, this game needs 32."