"Gun" by "Poly by Google"
is licenced under CC-BY 3.0

"Armor Metal" by "Quaternius"
is licenced under CC0 1.0

"Spaceship" by "Liz Reddington"
is licenced under CC-BY 3.0

"Alien" by "Quaternius"
is licenced under CC0 1.0

"Grenade" by "Quaternius"
is licenced under CC0 1.0

"Turret Teleporter" by "Quaternius"
is licenced under CC0 1.0

"Plasma Turret" by "Zsky"
is licenced under CC-BY 3.0

"Flamethrower Turret" by "Zsky"
is licenced under CC-BY 3.0

"Emp Turret" by "Zsky"
is licenced under CC-BY 3.0

"Drone" by "Silly Fear"
is licenced under CC-BY 3.0

"Black hole" by "Poly by Google"
is licenced under CC-BY 3.0

"Jetpack" by "Poly by Google"
is licenced under CC-BY 3.0

"Turret" by "Kenney"
is licenced under CC0 1.0

"Robot" by "Ray Alez"
is licenced under CC-BY 3.0

"Virus" by "Poly by Google"
is licenced under CC-BY 3.0

"The SoundWave DJ MKII" by "Tipatat Chennavasin"
is licenced under CC-BY 3.0

"Laser" by "Pichuliru"
is licenced under CC0 1.0

"Alien" by "Poly by Google"
is licenced under CC-BY 3.0

"Alien" by "Quaternius"
is licenced under CC0 1.0

"Alien" by "jeremy"
is licenced under CC-BY 3.0

"Flying saucer" by "Poly by Google"
is licenced under CC-BY 3.0

"Flying saucer" by "Poly by Google"
is licenced under CC-BY 3.0

"Animated Robot" by "Quaternius"
is licenced under CC0 1.0

"deep space robot" by "Tom De Wispelaere"
is licenced under CC-BY 3.0

"Generic Robo dude" by "Erik Buchholtz"
is licenced under CC-BY 3.0

"Robot Enemy Flying" by "Quaternius"
is licenced under CC0 1.0