BluRay Version of HD Batsu-Games available?

Hi,

i wonder if there are published official BluRays of Gaki no Tsukai Batsu Games outside there for buy.

I mean: You may download the Batsu games of the last three years in HD right? And they even were shown on HD TV. But no matter where i look i can not find any BluRays of Batsu Games. So i wonder, if they’re not filmed in HD?

Why are they not selling the Batsu-Games even on BluRay?