I went into this anime expecting a lot less than I walked away with. Don't let it's current low MAL score fool you as it initially fooled me, this anime may well be worth your time (the 50 minutes it would take to watch the entire series). Now I admit I am probably this show's exact target demographic, while I no longer play Onigiri, there was a time when I was quite active and really into the game. I really like the characters, art style & general tone of the show. The style of comedy they went for fits the game and it's characters sowell.
I do have to dock some points for sound unfortunately as although I really liked the OP, I couldn't get over how they play these battle sound effects over it essentially drowning out their own quality OP and ruining the experience, it really used to grind my gears every watch. But that is my main and possibly only criticism of the series. I think past reviews have been far too harsh on this show and not simply judged it for what it is.
There's no semblance of a cohesive story, but there doesn't need or try to be. What it sets out to do (provide fan service for existing fans, potentially attract more fans and generate interest in the game & entertain for a whopping 4 minutes at a time) it does very well. I had a very good time with the series and found myself having at least one good laugh per 4 minute episode, usually more. My favourite episodes were 8 & 9 so try to make it to at least there before making your mind up on the series, I've seen many people give up on this show early and I can easily see the OP sound blunder putting people off from the get go.
I give this series a solid 8/10, a must watch for fans of the game, and worth a shot for everyone! With it's extremely low time investment, you can easily squeeze in eps wherever you have a spare 5 minutes.
(let me know if you enjoyed my review, the first one I've ever written :P)