There are 3 Level Groups, in the game, the difficulty varies from easy to plain hard. I have created all of Level group 1, 7 levels in total I will soon make that to ten but am focusing on original more difficult concepts for level group two so I can finish all 10 of those levels before March 1st (Beta 1.1) with the Final group 3 releasing at the start of the summer or possibly sooner depending on sales (beta 1.2) .