Every game has a simple idea for its gameplay at its core. But often, this idea needs a whole lot of testing and improvement before we can determine whether it's fun or not, which is why rapid prototyping is vital.

We can use Cocos2d-x to quickly test core gameplay ideas and run them in the simulator or on a device in a matter of minutes.

Also, the techniques shown here can be used to build interface elements (such as the energy bar from our previous game) as well as an entire game! If you don't believe me, check out the game Square Ball in an App Store near you.

Now, with all the logic for gameplay in its proper place, we can proceed to making this game look good! We'll do that in the next chapter.