This is what I experienced with Weiss Survive.
As a commercial for the game Weiss Schwarz (which I love), it does a solid job of making you want to play the game. It isn't a Yu-Gi-Oh! quality story, but given that the entire "series" lasts 30 minutes that isn't surprising.
As an instructional video for the game, it fails miserably. They try to stick to the real rules somewhat, but they do such a horrible job of explaining what's happening that I'd be even more lost than I was when I started playing. Using Yu-Gi-Oh! as a reference, the best card game shows tweak the rules to make a children's game epic; this show just leaves rules out.
As an anime, it's...fine? I laughed quite a bit from the references to other shows and other gags, but most of the jokes are repeated in all 16 episodes and by the end just aren't funny anymore. I found it to have the right amount of ecchi (if such a thing exists).
Overall, I give this a 6/10. There are far worse ways to kill half an hour.
