I thought it was very fun, I'm about to start the third episode. It's no Shogun, but it's quite fun. As other people have said here, they nailed the look and feel of the setting, and my slop devouring brain loves that they sometimes use sound effects straight from the games. It really tickles all my nostalgia neurons, and I quite enjoy it. But I'm a fan of the franchise, so YMMV.

I think it's essentially the Twisted Metal show, but better. Not by much, but better. And just like TM has Sweet Tooth as an incredible breakout character, Fallout has The Ghoul, but I think that says more about Walton Goggins than the show itself!