Play with ypur friends.
The wind plays an important role in this game, it's the main direction where your shot will be sent. Then it comes the mobiles, there are a lot of them to choose each with different types of attacks.
Once you reach higher levels the game turn into showing you are "more addictive" than the others, because it count how much Gunbound Points you have, and if you have more Points the the other, then you are "better", it isn't well organized and kinda boring.