Please, test new version.
Changes are:
* Portrait/Landscape modes
* Save last level on exit

Regarding orientation: dunno why, but on my device this game not alway changes orientation according to device rotation. Sometimes it does, sometimes it requires some external kick (for example, run Phone application which will rotate the screen. After that, game starts to change orientation automatically). Will investigate later.

Expect sources on some public git. I really suck at GUI layouting, hope someone will fix it.

Thanks to hrw for patches.

Stay tuned.