I shouldn't know this, but I think hockey was Mario's first sport. Before he got into the boxing game (asa referee), before Tennis and Golf and Baseball, before soccer and basketball and the Brobdignagianer-every-installment Olympics Games, there was Donkey Kong Hockey, where Mario and Dk went at it via some Blades of Steel fu.
So I'm not entirely drinking the Gingold soda -- that is one sterling-silver reference that no one is going to get, but alas -- when I say that this Mario-branded air hockey set is not just an overreach but actually quite appropos. You bang a turtle shell around instead of a normal air hockey puck. And, since it looks like the Koopa Shell has its own battery supply and thus its own air cushion, you don't need an actual air hockey table to play air hockey. Just, you know, a regular tables with raised edges all around and two bilateral portholes to use as goals.
As with so many of the finer things in life that involve spending money on ridiculous cartoon-charatcer merchandise, this is only in Japan.