This game is good if you fix a few things there is a bug in lvl 5 going to 6 I got killed for no reason I was clicking and clicking the zombies they still killed me another thing I should add the pattern is very simple and easy to learn making the game very easy and ultimately boring try to make zombies just spawn wave after wave no stop and provide a challenge to the player.There is no player 2 only one that was a bit stupid sorry the score in my opinion never be divided unless is a real 2 player game.Graphics are ok for a flash game they look like images coming at you but I understand is not a really big project.Another thing if you really want to make this game awesome make a upgrading system or level base something to provide the player more options instead of a spam click game hope this helps for you.