Quite a fun arcade game, got sucked in playing it for a bit. I think at a certain point maybe another row of birds could show up to vary the difficulty a bit more, cause just the increasing amount in the two lanes present does make it harder, it's not really felt. And maybe different birds could have their own personalities like the ghosts in pac-man, the white one moves slow, the black one - fast, instead of it being a random speed. All that said, I still enjoyed playing it, well done :)