Galaxy Blast - Defend the core

Shoot color waves to kill the enemies that try to get to the core, do not let them touch it!
Use up to 3 different power ups to make your journey easier throughout the 33 universes you will have to traverse to save the core.
Test your skills and your mental agility to choose the correct shot at any moment. If you fail too much you will run out of ammo!
Conquer the first position in the global ranking! The more enemies you kill and fewer shots you miss, the better your score will be!
You can save the game at any moment. Your level and the score you had will be stored and you will be able to continue at the same point keeping your record.
Remember that you are human, you need eating, sleeping and going to the bathroom every some hours.