Think about tetris

Tetris is an addictive computer game created (I believe) by a Russian. There are many variants but all depend on creating a 'line' by fitting tiles created from four squares in different configurations into a grid. When one completes a line of squares, a point is awarded and the line is deleted.

The game usually progresses by 'levels', in each of which the 'tiles' fall faster and the player's reactions must be quicker.

I have not seen a variant with 'male' and 'female' tiles. I imagine that this addition is simply to make the game harder for those who are expert at it.