Bloody Disgusting reports that Sony's Columbia Pictures has acquired the original spec horror action script Supermax from actor/writers Christopher Allen Nelson (Kill Bill Vol. 2) and Mitch Rouse (Strangers With Candy).

This is NOT to be confused with the Justin Marks Green Arrow movie, called Super Max, which David Goyer was going to direct for Warner Brothers, Latino Review reports.

That's despite marked similarities in their storylines, B-D reports:

Supermax takes place in a Maximum Security Prison for the Super-Natural as a skilled guard must join forces with a lethal inmate after a riot ensues in order to fight his way through various monsters and mad-men in order to survive.

Goyer's movie has a similar scenario, except the prison is for supervillains and Oliver Queen, aka Green Arrow, is the good guy who finds himself trapped among the inmates.

Nelson is a special effects guy who worked on Return of the Living Dead II, Bordello of Blood, Nightwatch, Species II, Constantine and Sin City.

Shooting is set to begin in early 2010 with more details coming soon.