First, aliens entered our dimension and kidnapped thousands of men and women. Then, in a whirlwind of human ingenuity, the brightest minds on Earth came together and created the Magic Ball of Relativity, which can return any object it touches to its home planet. Finally, they chose you to rescue the abducted. So strap into your starship, transport the Magic Ball across space and launch it at the objects placed before you! If your aim is good, then you will return a hero. Powerups will emerge from smashed items, interactive objects will keep you on your toes and explosive 3D visuals will amaze you right up to the end. Don't miss Magic Ball 4, the greatest Magic Ball adventure to date!

* Four fantastical worlds
* Destructible 3D scenery.
* Realistic physics
* Each level has its own storyline

For those unfamiliar with the genre, tower defense games are part arcade game, part real-time strategy, where your goal is to build defensive and offensive structures on the fly in order to stop waves of enemies from marching from one end of the screen to the other. In this case, you must protect your house from the zombies advancing across your lawn.

Luckily, you're quite the green thumb, and can grow plants that slow the zombies down. But you'll have to be crafty, because different kinds of zombies have different strengths and attributes, like the zombie who was a buff football player in its former life, or the one that wears an orange construction cone on its head for protection.