Recent reviews by Square Unity

Special Features gives you 7 levels to play, some with new mechanics and puzzles not found in stock game play. As well as levels you also get a tracker for how many hours you have played, how many you have in a current run and a reset counter.
Lastly you get a achievements tracker as well which will help you with the achievement hunting. If you like the game play of the base game you will enjoy this

Besides See-Saws in the game not functioning correctly at all the game is solid for free