If Hollywood has taught us anything, it's that the best way to keep alien hordes at bay is a bloody great pulse rifle, or a swooshy laser sword.
Indie dev Upper Class Walrus is suggesting iOS gamers try another approach, however, with its retro arcade beat-'em-up Take My Machete.
As you have no doubt gathered from the game's title, this particular alien invasion will be stopped using the sharpest and shiniest object in mankind's defensive arsenal: a bloody great knife.
Played out over four single screen stages, players must battle green spacemen, flying saucers, and weird centipede-looking things.
Presented in a pixel-art style, Take My Machete's simple control and nostalgia-inducing character design give us a warm, '90s era glow.
If you're worried that hacking extraterrestrials to bits with a machete might get a bit old, our hero can also wield a bow and arrow, or even a guitar.
There's also a dog scuttling around the screen, but we'll have to wait and see whether he's going to be useful (Lassie), or a liability (that mutt in Alien 3).
Take My Machete will land on iPhone this Thursday, when you will be able to download it for free. If you fancy it.