- "The demon overlord has taken over this massive haunted complex. Navigate through six haunted houses in one while his army of souls terrorizes you around every turn."
- ―Fright Fest website[src]
Gates of Hell is an annual haunted attraction during Fright Fest at Six Flags Great America. It was introduced for Fright Fest 2015, replacing the Mausoleum of Terror. It has returned every year since.