As 90s as cosmic comics get! An evil alien sends copies of all earths heroes to assassinate them, but the copies have more spikes! And fangs! And claws! The old Mad God is on the run, trying to evade an even more diabolical successor. The Baxter Building gets gamma bombed! Wolverine blows smoke in Iron Man's face! Planets vaporize!
It's dorky in such a throwback way. And for a giant crossover, it's impressive how many characters get at least one cool moment. Wolverine being the first to kill his doppleganger, and Spider-Man sitting out the distress call, and when the world seems like it's ending, Reed and Sue Richards have a quiet panel to whisper goodbye. It has plenty of big brawls, but also manages to structure a plot well to incorporate so many cameos. Even Black Cat gets to play Captain America's spy.
This is one of those big crossover events from my childhood that I never got to read. This is the sequel to Starlin's classic Infinity Gauntlet, in which Thanos assembled the six Infinity Gems and became the God of the Marvel Universe. That story had him at the center of the universe the entire time, and the combined surviving heroes of the universe had to stand against him: the X-Men, Avengers, Namor, Spider-Man, you name them. Back then, Thanos was narrowly thwarted by the spiritualist Adam Warlock, who divided the gems between other worthy protectors. Now, Warlock's dark side surfaces and wants to reassemble the gauntlet and overthrow the other gods of the universe.
In short: it's freaking cheesy and fun. Magus is such a chatty, self-absorbed villain, constantly narrating how he's manipulating the heroes or cosmic entities. His plotting is made better by a pact between Dr. Doom and Kang the Conqueror, the big super-genius enemies of the Fantastic Four and Avengers, who cooperate just long enough to rob Magus and screw each other over. Together the trio are a testament to genius villains who trip all over themselves, so well-suited to a giant crossover with universe-breaking stakes.
If you fell in love with Thanos in Infinity Gauntlet, then Starlin grabs you by making him on the run this time. He's trying to out-think Magus and has to beg Warlock for help. It's a great sequel that doesn't replicate the original, but shows the consequences of Thanos's old plot, and forces him to live with them. It also means X-Factor beating up an evil Hulk clone, which is fun in its own way.
The only complaint I have is the lazy way the contents are ordered. This volume collects both the main series and a few tie-ins, but doesn't order them chronologically. You'll finish the story, and then have another hundred-or-so pages of what Infinity Watch, Mole Man, and Thanos were up to in-between earlier chapters. They easily could have been folded together to make one linear narrative, in the same fashion as people would have read them back in 1992.