The good:
I love this game! Physics is just so fun to mess around with.
I thought the minifig was ugly and far worse than ours, but then found you can build on it. You can use people as the foundations of buildings if they are afk. Blowing up houses is so satisfying also.
The account creation system is fantastic. You enter name and password, then get your own account page with a friendslist and your home, which is a small map for you to build in. You can build in 1player mode for a lag free experience, or go multiplayer, which doesnt lag much at all.
You can build on cars, robots, people, join them together; do anything. I made a car with spinning arms that smashed people away. Controlling cars is simple, and you only need to stand on them, so racing is great (although they are slow). Graphics are nice and simple.
The building system is pretty cool, and easy to get used to. Theres a list of premade builds you can find in player solo mode, so a giant castle can be spawned around you if you want.
The bad:
Its a slow paced game. Weapons take ages to reload, and the best ones can be outran by you after you fire them, they just hover in the air.
Anyone can shoot a critical support you made in your build, collapsing the whole thing, which gets annoying after a while.
Not many people play. 6 in total online on all servers at a peak time.
If anyone does want to play, I found a fun glitch where you attach bricks to your feet and shoulder and it lets you jetpack.