The game improved. The bloom-shader switch is really useful now to
tune the framerate.

Now, the next would be to make different levels.
Maybe also with moving blockers, and some powerups
(3 balls, increase size of shooter, magnet for the shooter -
ball sticks to it, short time weapon to shoot bricks directly etc)

The "pollen" emitted by the flowers should be more visible,
they are hard to notice.