Although I cant complain, its kept me entertained daily for over a month *after* I finished the Lite version! With 179 levels youd expect a lot to just be repetitive filler, but I was surprised at how many brilliant puzzles were in here! Some of the later ones you unlock after finishing the main game, I almost swore they were impossible! (Theyre not, theyre just very, very devious, and always logical!) Anyway, try the Lite version, if you love it like I did, you will not regret spending a measly $5 for this classic, awesome game. Its great on so many levels (geddit? ). My only criticism would be the controls can be fiddly on the iPhone, and it loses the sound if you get an alert during the game (so you lose the awesome music). But Id still give it six stars if I could! Ok, Im done gushing now...