Multiplayer game of reaction.

There are two modes how to play this game:
* "Player vs Player" mode. 2 players play on the same phone. Goal of the game is to react faster then your opponent.
* "Online challenge" mode. You can play against opponents from all over the world. You will play exactly the same game as they played, and at the end you will see how well you performed.

Currently there are 15 game modes in player vs player mode
Currently there are 10 game modes in online challenge mode

* country flags
* white screen
* chessboard pattern
* full circle
* same colors
* blue circle larger
* playing cards in order
* all numbers are even
* all numbers are odd
* all numbers are prime
* at least one color appears only once
* all images part of one bigger image
* blue circle moves faster then red circle
* two images of each color
* sudoku


Soon there will be new game modes. We regularly keep adding them.

Recent changes:
v2.3
Added new game mode: Country flags

v2.2
Fixed bug with result in player vs player mode not showing up.
Small changed in appearance.

v2.0
Online challenge mode. Play against players all over the world.

v1.4
2 new game modes added:
* two images of each color
* sudoku

v1.3
2 new game modes added:
* all numbers are prime
* blue circle moves faster then red circle

v1.2
2 new game modes added:
* at least one color appears only once
* all images part of one bigger image