Ah, you've fallen into a common trap there vfb.
Fiddy comes from an ancient Sanskrit word originally meaning 'scent' or 'perfume'. Tree-fiddy is of course a fiddy that comes from trees - in the ancient middle east this would normally have referred to frankincense (a valuable and strongly scented tree resin), and thus we can see that Omnirizon is making a reference to the forthcoming Christmastide.
In juxtaposing the approaching festive season with the image of the Loch Ness monster, the introductory text is actually a subtle yet hilarious satire on the increasing commercialisation of Christmas.
I have no idea what the game rules are, though.
