Since there's so many negative reviews, I'll start with what I LIKE about the game first.
The open world concept is awesome and a lot of fun. I've also been having way too much fun taking selfies in game and I love the aspect of my friends being able to play in game with me from anywhere with a good internet connection.
That being said...
The game is buggy and the graphics aren't great. When you play with multiple people the game lags.
The starters are cute as heck when they start out, but the evolutions are dumb.
The Scarlet legendary pokemon is cool...until he turns into a "bike" yet still walks on all fours. I would have rathered him just walk around because it looks so silly.
Overall, I'm not mad I bought the game. I'm still having fun playing it with my gf. But I'm definitely dissappointed in the quality. If they had waited a year or two for release and ironed everything out this would easily be a 5/5 star game.
I give it 2.5 out of 5 stars as it currently stands.