Minimalist rhythm and skill game Lumena, which we recently reviewed, is now available in a free, ad-supported form on both Android and iOS.

This marks the game's debut on Android systems and is currently the only Android version available. For iOS users, this is a new version which does not supplant the $2.99 paid version. The only difference between the paid and free versions is that the free version is locked in portrait mode so that the ads won't get in the way of gameplay. They're not intrusive at all, and if you held off from getting the iOS version before because of its price, grab the free version.

It doesn't disappoint.