I played the first 1/2 of the game with no trouble. I currently have to wait a few minutes and refresh the browser after making a purchase for them to go through. Also I have lost the blop reward for a level a few times since it started lagging.
Normally I love upgrade games. However, my opinion of this game changed when I fully upgraded the gun and still couldn't kill a T-Rex without taking damage.
Done. Now the trails don't fade and you can destroy all missiles by pressing space. However this will also destroy the trails.