What is the big idea? What kind of apps do rake in the big bucks? Well, after the smash hit Labyrinth, Tap Tap Revenge, not to forget Google Earth and other big players, it’s the turn of  “iSteam: Hot and Steamy Entertainment”, a weird app, priced at $0.99  that is raking in a cool $150K from the App Store every month.

So what is so special about it? If you have not already downloaded it, check out its features here:

1.    Blow on the microphone to  create a haze on the screen
2.    Write  messages or draw on the screen the way you would do on a mirror
3.    Want to clear the screen? Shake your iPhone to clear and start over
4.    Like it happens in real time, see the droplets leave their marks on the screen.
5.    What can you do with it? Well, write a secret message and surprise somebody using the steam cover.
6.    Use the photo library to choose the images you want to steam up!
7.    E-mail this steamy masterpiece.

Sounds cool? If not yet, check out the video here:

Now you know what it takes to strike gold at the App Store. Being innovative and coming up with something that has not yet struck anybody else.

The iTunes link for downloading iSteam is: Click to Download from App Store