Raining Trash

Move your boat with the "a" and "d" keys.  Make the trash fall into your boat to get points.  If a colorless trash falls into the sea, it's game over.  These are called toxic trash.  They also give you extra points if you get them into your boat.  The more points you get, the faster the game is.  There is one more thing that I'll let you figure out by playing the game.