Welcome to CNET Australia's App of the Day, where you can see some of the coolest, silliest and most useful apps in action.
If you like the pew pew sound, the app world is really your oyster. Space shooters proliferate like an unchecked population explosion, but if you check out just one new one this week, make it Galaxy Defenders. It's pretty simple to play; hold a finger on the screen to shoot continuously, and move it around to move your ship. Waves of space objects and shooting ships will come at you, and you shoot what you can and dodge the rest. It's the sort of simple, mindless-yet-engrossing fun that makes mobile gaming a truly excellent way to chill out at the train station.