Miscellaneous
Some graphic parts of the Bubble Ghost halls have a specific meaning:
Hall #4: An advertisement for the French telematics server Pinky by Godefroy Troude, and a wink to the video game Mercenary by Paul Woakes published by Novagen.
Hall#5: The face of the author slightly modified.
Hall#11: The face of the author appears with glasses (if the ghost is blowing in the ear, glasses disappear) and a wink at the video game The Pawn published by Rainbird.
Hall#15: Another wink to the video game Mercenary by Paul Woakes published by Novagen.
Hall#28: Two more winks to the video game The Pawn published by Rainbird.
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