If you need to beat the 4th boss. You should shoot the lasers at the bosses arm when he tries to shoot the Earth and he should cancel it. You also need 10 level 25 Laser guns for your 25 level 5 Spaceships. If you wanna kill this boss fast you need to upgrade the bombs to level 50. It's very expensive but you wanna kill that boss fast right? If you are stuck at level 29 because of the Motherships that spawn ufos that will shoot 3 mega lasers then just use your brainwash lasers and shoot it at the motherships! You can command the motherships to destroy their base. That's all of my tips hope they will kill you :D
 "A Random RPG"){kind=icon}
 "Learn to Fly 2"){kind=icon}
 "The Final Death Wish"){kind=icon}
 "Versus Umbra"){kind=icon}
 "Bubble Tanks 3"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
 "You are a... The Sequel"){kind=icon}
 "Wish Upon a Star"){kind=icon}
 "You Only Live Once"){kind=icon}
 "Cubikill 3"){kind=icon}
 "DJManiax"){kind=icon}
 "Upgrade Complete 2"){kind=icon}
 "Haiku Hero"){kind=icon}
 "Extreme Missile Defense X-treme 3D"){kind=icon}
 "Epic Battle Fantasy 3"){kind=icon}
 "Bullet Heaven"){kind=icon}
 "Electric Box"){kind=icon}
 "Lightbot 2.0"){kind=icon}