Tired of word games? Then test yourself on a fiendish maths-based puzzle game.

Link numbered tiles together using add, subtract, multiply and divide operators to form equations, and collect points for each correct equation entered. Be careful though, as if a tile isn't used for too many turns it will be removed from play, limiting the choices for your next equation.

Or test yourself against the 56 pre-built puzzle grids, where the aim is to remove all the tiles from play.

No time limits, no cute animals or animations to break your concentration, simply a test of logical brain power.