Hercules in the Underworld was a virtual reality arcade game located at DisneyQuest from 1998 to 2000. The attraction used the CAVE system, which involved enclosing players within multiple screens and wearing 3D glasses.
Four players worked on a team, with one player playing as Hercules, Megara, Philoctetes, and Pegasus each. They journeyed throughout the Underworld and gathered lightning bolts, while seeking out Pain and Panic. When they find the henchmen, they also find a minecart full of lightning bolts, which they then ride to Hades's lair. Pegasus pulls the cart, and the others throw the bolts at Hades.
The game was removed in 2000 and replaced with another CAVE based game called Pirates of the Caribbean: Battle for Buccaneer Gold (which would remain there until DisneyQuest's closure on July 2, 2017). The hardware was likely dismantled, but Disney rarely just throws away their intellectual properties, so the game software likely still exists somewhere.
Since DisneyQuest's closure in July 2017 and subsequent demolition a month later to make way for a new attraction called the NBA Experience (which would officially open on August 12, 2019), it's unknown where the software for its former attractions exist.
- Hercules in the Underworld on the Lost Media Wiki