I'm not one to do much in the way of reviews, even though many have and still do ask me to do so. The reasons are quite simple, as I feel many others do a far better job at reviewing products than I ever could and I don't take pleasure in reviewing (let alone reading) releases that I'm not enjoying. So, for the most part, I leave reviews in the hands of others, although I do post often about new releases that spark my interest.
The Second Edition of Monsters! Monsters! was released in June of 2020, and technically is not a "new release." Quite simply, I knew it had released, I had my copy in print and PDF and I never got around to reading through it until earlier today. So, technically, it's new to me ;)
First things first, the art is damn good. The cover is awesome and the interior art reminds me of Games Workshop / White Dwarf artwork from the 80s and it fits the atmosphere perfectly.
Ruleswise, you can see the influence of later editions of Tunnels &Trolls on this edition of Monsters! Monsters! We get spite damage from T&T 5.5, stunting, and a new optional rule - Chaos Factor. Chaos factor has a huge potential to skew the power level of the game in favor of the players, but that isn't necessarily bad, just something to be aware of. You get 5 Fast Start Kindreds (and 49 altogether), so your choices as a player cover a large potential of concepts.
Still, the rules are Tunnels &Trolls rules. If you play T&T, you'll find inspiration within. The enclosed GM Adventure (not quite as rare as a unicorn in T&T, but certainly uncommon) is part setting with a large helping of adventure and adventure leads. The Ruins of Hael'Ku can be used for Monsters! Monsters! or Tunnels & Trolls, and should work well with either system - or both.
Monsters! Monsters! is 9.95 in PDF, which I think is a very fair value for what you get, especially if you are a fan of the Tunnels & Trolls rules.