You won't find any fancy graphics here, just a great mind challenge. This game has numerous types of puzzles on 3-4 difficulty settings to test your judegment, memory, maths, puzzle solving etc. There are several modes to the game. A daily brain age test where you can see how you're improving (or getting worse), a world map challenge where each country is associated with a puzzle, or several single challenge modes for individual or group topic challenges.
I've shown a few people this game and now they want a copy of their own, and for £10 its a bargain.