The game is okay, but the game relies on other people playing to make it difficult (I am guessing that the ghost birds of other people having played in the past), which usually doesn't work out unless the game is well-known and very well made. There are two things I'd like to comment on as well.
- The music is relaxing.
- the game starts too suddenly. There needs to be a ready set go after the "matching..." happens to prepare the player.