Gripping tale and likely very close to what would happen A sobering movie. Intense, but in a good way. I thought all the main characters were well developed and the plot, while largely predictable, was still very good.
I check reviews before watching movies and some prior reviews had me hesitating, particularly as some reviewers criticized the actors as unlikable and the decisions as unrealistic. I disagree with those assessments and I'm glad that I watched regardless. The characters, both primary (Lead, his wife and child) and secondary roles (there were many), seemed to me to act in ways very true to ways real people act in major crisis. Both the individual characters and the crowds responded how I would imagine people would respond. Without giving anything away there was certainly a mix of bad and good. For those criticizing "entitlement" (I saw several such reviews) there is some merit to this (meaning not everyone had "equal" chances) but from my perspective if a movie makes us think about that, and more importantly whether we'd be willing to give up our rights for another, it is a good thing.
One could hardly imagine a global catastrophe movie without special effects. For me, special effects only work when they seem plausible and the ones in Greenland seemed plausible given the premise.
But what I particularly appreciated was the message that Greenland drove home -- and one we would do well to ponder. What really matters? We live in a world obsessed with a lot of things that don't matter (our houses, our cars, our social media, our bank accounts, our appearance, etc.). For most of our lives, most of us go about blindly focused on all these superficial things.
We may not face a "Greenland" type depicted event in our lifetimes (though I think it possible) but we all will face death. I also believe that our earth will one day be destroyed (exactly how or when I don't know and I'll let others take their stab at guessing though I am very skeptical of people who claim to have it all figured out).
For those who've read this far, I would highly recommend reading the true (not fictional) book of Revelation in the Bible which relates that one day this earth will indeed burn up - reading and taking it to heart will prepare for whatever may come far better than anything else possibly could.
On a final, personal note, this movie challenged me to forgive a family member --- and if a single real life is moved towards love and forgiveness as a result of a movie it seems to me to warrant top stars.