Well, in magic circles the game is often abbreviated as MtG, the t usually being lowercase because many people don't capitalise "the" when writing out "Magic the Gathering". (even though the WotC themselves do capitalise it on the cards). Whether this proves anything I leave up to the reader.
Even more annoying is that Mt is one colour and GOX is another. To me this implies there are two shortened words in the name: Mt and GOX.
And Mt can easily be thought of as Mountain.
