To me, this movie wasn’t much different than Pacific Rim: Uprising: big things fight big things, with the plot existing to provide backstory for why the big things are fighting.
Also like Pacific Rim: Uprising, Rampage doesn’t take itself too seriously. Dwayne “The Rock” Johnson literally shrugs off a bullet wound with an “Oh, it didn’t hit any vital organs” excuse. After getting shot, the only time he acknowledges the wound is to put his hand to it much the same way you or I might do when getting a cramp.
This suits the movie well, allowing it to focus on The Rock being a badass, and on the giant monsters destroying the city. The movie is fairly entertaining, filled with a few references to the video game (a Dave & Busters being destroyed, and the Rampage arcade machine makes a brief appearance somewhere in the film as well).
The only major gripe I have with the film is that the monsters died way too quickly once The Rock starts fighting them. After all that buildup, I was hoping for the monster vs monster fight to go on a bit longer.
Overall, the group rating is ★★★☆☆ (3 stars). The movie was pretty entertaining. You can see what we did at the meetup here.