For the sheer quantity of its gibbering, jabbering nonsense, this movie deserves some points. That, and the amusing cameo at the end from Keith David as the Simulator, AKA God, who explains to the awestruck mortals that God is an entirely free creator, rather like a self-published novelist, then grows irritated when the mortals think that being self-published is lame: “It’s not my fault if you don’t understand the industry!”

This is an exhausting indie romp on the subject of time travel, and sometimes plays like a funnier version of Shane Carruth’s time-travel classic Primer – well, slightly funnier. Samuel Dunning plays Tim Travers, a goateed scientist who has stolen nuclear materials from a terrorist group to power the time machine he has invented. He sends himself back one minute into the past with a gun to kill his younger self to investigate the time-traveller’s paradox: if he eliminates his one-minute younger self, then won’t he also disappear at that moment, popping like a soap bubble, because it means he can’t exist in the future? But given that he has to exist in the future to have set all this in motion, doesn’t it mean that this time-travelled self has to survive?

Well, apparently it’s the latter, and Tim keeps going repeatedly back, creating many different selves who at one stage indulge in a bizarre off-camera orgy. A hitman, working for that furious terrorist group from which Tim stole, has the unhappy task of whacking all these space-time clones.

This is a film that drones on and on, though it does have a nice walk-on from Danny Trejo and there’s the unintended side-effect of making you appreciate Douglas Adams’ The Hitchhiker’s Guide to the Galaxy which did all this and more with a much lighter touch.

• Tim Travers and the Time Traveler’s Paradox is on digital platforms from 26 January