This is really a lot of fun! Gameplay is very enjoyable and easy to pickup, the graphics are excellent and all of the enemy rockets are easy to see and understand quickly into the experience. I loved the sense of danger as the rockets were swarming earth. The "ultimate" system is nice and rewarding too. Music is great and SFX are great! Extra props for it being run in a browser too.
My one very minor gripe is that with the laser caution sign being connected to the edges of the screen/game area, when it comes from the lower/right side, it conflicts with the ultimates and I didn't see it next to them the first time I played which was a little confusing. Very minor though!
I survived 47 days and destroyed 467 rockets. Surely I did my best at delaying the inevitable... great job!