MindWind

Rules are simple:
1) Enjoy the game.
2) Don’t forget the first rule.
Briefly, the game has two modes (‘X and Y’, and ‘Sort’). First one requires simple arithmetics, second requires attention. Game provides a manual page on the first run.
Anyway, here is how to play in ‘X and Y’ mode:
1) See the value of ‘X’, which will be displayed in the game.
2) See the formula (combination) of that ‘X’ below it.
3) Calculate the output of that formula.
4) Find the answer among 16 numbers in the center before time is up.
And here is how to play in ‘Sort’ mode:
1) Choose the least number among given 16 numbers in the center of the screen
2) Choose next least one
3) Keep track of last chosen numbers on the top-left of those 16 numbers, so that they were in ascending order
And again, first one requires simple arithmetic, second one requires attention. There are many, various difficulty levels to reach, so don’t hurry to reach the end of the game.