Yesterday we released Rigonauts HD for iOS. The game will work on iPads 2 and is currently available for the low low price of $1.99.
You can find the game in iTunes here: Rigonauts HD
Or maybe you would rather play it on PC: Rigonauts on Steam
And of course select Android devices also play the game: Rigonauts - Android Apps on Google Play
Note: There are a few people who have been experiencing crash-like events where the game closes. This is due to our game being a bit resource hungary. We plan to submit a fix by end of week. However, in the mean time you should be able to avoid the problem by restarting the device and running the game with no background apps.