Cristal Games Apps

"Defends Earth" challenges you to survive to50waves of alien attacks on our planet.The alien ships are piled around the Earth, you shouldavoidimpacts, counterattack with your own weapons and returnalien´sshots for the survival of mankind."Defends Earth" is easy to play for those who do not usuallyplaythis type of game and a challenge for those experts who wanttosurvive the 50 waves.Very few have succeeded, do you dare to be one of them?TRY IT!