I didn't even know this existed until a few days ago, even though I've known Yojouhan for years. First things first: These 3 specials should be seen AFTER "Tatami Galaxy Time Machine Blues". The idea of the group hanging out there and discussing weird and random things adds a lot to the narrative of time travel. On to the specials themselves: I like that the studio used a cheap production but it works with the "fairytale-type story". But yeah, it's really not on the same level as the other works from the same anime franchise. All episodes have no more than 8 minutes, so you shoulddefinitely watch them, because they do not take much time and have their good and funny moments.