This is almost certainly fake. The ebay auction is meaningless. Notice how the account's name is "aa" plus a number, and also has no seller feedback. Considering the lengths to which they've gone to do these pranks in the past, a dummy ebay account is nothing.

Also a big tip off is how the seller "just happens" to live in the same city as the board owner, so the box could very quickly be authenticated.

The text on the box about it being Menavision's "debut" game is also a giveaway.

Seriously, what kind of idiot would unleash something like this around April Fool's day and risk having it called a prank, etc. Why not just wait a few more days when everyone will take it more seriously? No way this is real.