Game developer Rovio have just announced that they’re introducing in-game payment support for their popular game “Angry Birds”.
The new “Mighty Eagle” is a new bird which can decimate a level, leaving nothing remaining, however to use him, you need to purchase via a one time payment from within the game.
However there are catches…
To use him again, you need to go back to the level and complete it yourself.
You can see details here which were announced at the Nokia World 2010 event: