Tha's right! Big Al's Shooting Gallery has been published on Android. You'll need Android 4.0 at least to be able to play it and if you want to save the scores and progress you made on the Facebook (PC/MAC) version. Just log in Facebook on the PC/MAC version (if you haven't done it already) and then log in Facebook on the Android version.
We will keep trying to improve the game with more content and improving performance.
Thanks and enjoy it :D!
P.D.: iOS users will have their version soon