I have to admit, the graphic looks very attractive and it also works with the theme of two doves playing a human game. 

using five keys to simulate five fingers is a very smart move! 

There are two things could be change. The first one is the time of moving finger. Right now, it's a lil bit messy. Maybe the time should be limited. Or the other solution is player needs to hold keys to move feathers.

Also, I wish you can explain the game a bit more at the start of the game.

Good job!