What do you get when you combine physics-based puzzle simulators with...uh...goo-balls? I guess you get World of Goo, which is, apparently, a game based around building things with balls of goo.
It's a puzzle game. The goal is to build a structure out of goo-balls that will allow them to reach the suction pipe. Once they make it to the goal, the pipe sucks up all the unused goo-balls. You need to rescue as many of the cute little blobs as you can.
You start out making simple towers, and as the game progresses, you move on to more complex architectural challenges and meet new types of goo-balls, such as the helium ones, seen here helping to build a bridge over a pit of spikes:
If you manage to collect more blobs than the minimum, the extra ones will be scooped up and deposited into the sandbox mode, where you can mess around trying to build the tallest tower possible. There's even an online leaderboard, where other people's buildings from all over the world appear in your sandbox as little clouds with names on them.
My tower is not very tall.
So is this a good game? I'd say so. It does a lot of things right.
For one thing, I adore the cute, cartoony aesthetic. Look at those widdle blobs! Bouncing around with their giant eyeballs! Awwww! The animations are smooth and the interfaces are intuitive and responsive, so any sort of interaction with the game feels pleasing.
As far as the puzzles go, in fairness, I've only played through a fraction of the campaign. But so far, there have been a variety of different puzzles with new mechanics introduced regularly, creating a well-paced gameplay experience that doesn't become stale quickly.
The Goo Factory sandbox is an interesting toy that works as an incentive to perform better on the puzzles. I think it's clever, although it seems like there's not much you can do besides try and build something really tall. Maybe I'm just not creative enough.
It's a light, casual sort of gaming experience that feels like it would be right at home on a mobile device. I don't think I'd recommend it for the PC unless you know you really like puzzle games or physics games.