No one thought about that it's free. But IT IS! Well, for that, ads are added to the game.
While the game runs with Android 1.6+, that does not mean that old Android-phones are good enough. The download has a hefty 12.2MB which is even more when installed. So no luck for G1 or similar users, unless they uninstalling all the other apps.
It's exclusively available at GetJar in the beginning.
Icon copyright by Rovio. All rights reserved