We may not yet have seen the last film written by George A. Romero. A couple days back, the world of horror films and pop culture in general lost a true legend when Romero passed away at the age of 77. While Romero rarely worked within the studio system, he still managed to craft enduring cult classics like Creepshow, The Crazies, and Martin. Of course, Romero will forever be most closely associated with his series of zombie films, and he should be, as 1968’s Night of the Living Dead created the staggering flesh-eating undead zombie that has propelled hundreds of movies and TV shows since.

Over the course of his long career, Romero directed – or co-directed – 16 feature films, and wrote the majority of them as well. Romero also made an impact on the small-screen, executive producing well-remembered 1980s horror anthology series Tales from the Darkside, which featured a famously creepy opening credits sequence.

Unsurprisingly for a man who created or had a hand in creating that much notable content, frequent Romero collaborator Matt Birman tells Indiewire that the now deceased director leaves behind four completed screenplays that have yet to be produced. In remembrance of his departed friend, Birman plans to try and get all four made into films at some point, and also plans to keep pushing forward on Road of the Dead, a loose sequel to Romero’s 2005 Land of the Dead that Birman was set to direct while Romero served as a producer.

Nothing has been revealed yet about the actual plots of Romero’s four remaining scripts, but two are based on novels, while two are original stories. Birman co-wrote one of the scripts, but it’s not clear which one. Interestingly, only one of the four scripts – a comedy – involves zombies.

As for Road of the Dead – which Birman plans to shoot next summer – that film takes place on an island where zombie prisoners are forced to race cars in a demolition derby-style competition, all for the amusement of the human inhabitants. This recalls the zombie fight clubs run by humans in Land of the Dead’s city Fiddler’s Green. Birman is uniquely qualified to try and continue Romero’s zombie legacy, having also previously served as a second unit director on Land of the Dead, Diary of the Dead, and Survival of the Dead too.