James Cameron is notoriously grumpy when it comes to talking about his movies. In a sense, he has a right to be. People keep telling him his ideas just won’t work and he keeps proving them all wrong.

In his latest episode of mind-speaking, Cameron railed against people who have been comparing Avatar to Bungie’s Halo. “The funniest thing is when some of the so-called fanboys get up trashing Avatar for looking too much like Halo,” he told G4. “It’s like… pay attention. If I’m referencing anything, I’m referencing the source work for Halo, which is my own stuff.” He’s referring to Aliens, a movie Bungie has long said was inspiration for its hit franchise.

There may be more alien worlds coming from Cameron in the near future, who said he has plenty of stories but not enough time to make them all into movies. Oh, and if you haven’t seen Avatar yet, go.