Great Brain Game Amazing game, very good for intelligently wasting your time. Down to only 4 star because it is a bit buggy, though still playable. Background textures have mostly disappeared and occasional tiles are missing.
Not 5 stars any more :( Used to love this game but there haven't been updates for ages and it no longer works properly on later versions of android. Shame :(
Amazing entertainment for hours If you like puzzles then this will suck you in for many hours
It's a great game to waste your time
Looks easy but gets progressively harder. Great time waster. Highly recommended
Still can't get enough
[v2.0.2] Minor fixes
Also on Google Play: 9 (FREE) and 10 Junior (FREE) -- a special edition for young mathematicians.