This is the FREE version of Blocks, and only contains the easy difficulty level. You can upgrade inside the game to access the medium, hard and expert difficulty levels. The FREE version shows ads. The ads go away after upgrading to the full version. Features: * 1 difficulty level: easy (upgrading gives you medium, hard and expert as well) * 75 carefully selected and fun puzzles (upgrading gives you 225 more puzzles) * Remembers which puzzle you are on, so you can just quit the app and continue later right where you left * Very addictive Once you complete all the puzzles in a difficulty level, the next level will be unlocked. You might fly through the first puzzles, but you'll be sweating over the later ones! Follow us on Twitter: http://twitter.com/denfalskezebra Support: We hope you have fun playing the game. We're keen to hear what you think of it, so don't hesitate to write us at [email protected] with feedback, questions, or bugs (although we hope there aren't any!).