StripOff 2009 by John A. Reder - The idea was derived from the old videogame Rip Off. I mixed it with some blockout and space invaders and this game was born.
The game ends when all of your barrier has been stripped away by the alien. You score 30 points for each alien destroyed. When you are down to 10 barrier chunks left the alien doubles in speed! Your barrier gets replenished every 900 points (30 alien kills).