Marduk, the Babylonian God of the Cities, has come to live in New York, the ultimate city in the world. But his age-old enemy has followed him, intent on mass destruction!

The ghost of Casey Jones returns and commandeers a locomotive for one last midnight ride. Despite his love for trains, a kidnapped Peter would rather be somewhere else in case history repeats itself and the train crashes!

After New York appears to suffer an earthquake, the ever enthusiastic Ray heads off into the sewers by himself to find out more. There, he learns that ghosts are gathering for a massive attack on the city!

A group of college students are being hunted by a gang of unruly frat ghosts, but the Ghostbusters find that they must help the phantoms graduate!

When Peter takes his date to the Cloisters in New York, warrior spirits spew forth from the tapestries with only one thing on their mind: taking Peter's date back into the tapestries with them, where she will remain forever.

Young Kenny fancies himself a Ghostbuster, and having been given a tour of the firehouse, tries to convince his friends that he is a member of the team. In an effort to prove himself, the boy enters a haunted house with one of Egon's latest inventions.

A paranormal convention comes to town, but when the Ghostbusters are called into action, they are forbidden by the hotel's manager from using their technology for fear of disturbing another group… a convention for dentists!

After Peter's car explodes, the Ghostbusters travel to Detroit's Generous Motors, where the automobile assembly line has been invaded by World War II gremlins, pesky little creatures who like to take apart anything mechanical.

Necksa, lord and ruler of the sea elementals, strikes out at the air-breathers who have been polluting the oceans. When the Ghostbusters attempt to stop him, Egon, Ray and Winston are swallowed by the creature, leaving Peter to save the day.

An unscrupulous film producer reacts with unusual enthusiasm when the Ghostbusters pursue a number of ghosts on his horror movie set. The ghosts help him in exchange for doing a film of their own… a movie that will feature the destruction of the Ghostbusters!

A news crew, trying to create a sensationalist story about the Ghostbusters, disrupts an experiment being conducted by Egon. Egon's soul is sucked into another dimension and a demon takes possession of his body!

Ghosts start coming out of televisions across New York, taking the form of famous TV characters! The Ghostbusters race against time to stop the spirits, while Slimer must save Peter's life.

A large horde of demons invades the city looking for a pair of scissors once owned by the mythical Three Fates. Now, the Ghostbusters find themselves in the depths of the netherworld, racing to stop the demons from controlling the lifespans of all mankind.

Count Vostok sends four Concorde tickets and requests that the Ghostbusters travel to Boldavia to rid his castle of a ghost. When the Ghostbusters arrive and are unable to locate a mirror, they begin to realize that things are not what they seem.

During a rare eclipse of the moon, a baby ghosts slips through a dimensional crack and becomes lost in New York. The Ghostbusters adopt the cute ghost, but soon hear reports of two other ghosts causing trouble around town.

An incredibly powerful evil animal demon escapes from his statue prison and turns the animals of New York City into fierce, aggressive, talking beasts that proceed to take over the city.

Egon and Slimer switch minds and the timing couldn't be worse, as an egomaniacal ghost named the Master of Shadows (William Marshall) wishes to test his wits against the brainy 'buster', and destroy New York if he fails to measure up.

After an almost deadly fall off the World Trade Center, Egon's fears start to get the better of him. So much so that the Boogeyman manages to tap into his fear and escape from his realm.

When Slimer hides a book of fairy tales under one of Egon's newest machines, everything in the book comes to life.

An ectoplasmic entity leaks out of the containment unit and it makes Slimer mutate into a big ugly monster during his sleep.

The Ghostbusters release the Stay Puft Marshmallow Man from the containment unit to shoot a commercial in exchange for getting $50,000 for a children's hospital. However, during the process of letting Stay Puft out, a vicious manta ray-like phantom escapes in order to seek revenge against the Ghostbusters.

Samhain's goblins release the spirit of Halloween from the Ecto-Containment Unit, and he turns the firehouse into his fortress. The Ghostbusters' attempts to take him down are foiled when the Junior Ghostbusters are captured by the vengeful spirit, and it's up to Slimer to help get them out.

A family asks the Ghostbusters to find out why a bunch of weird stuff is happening in their house. This is complicated by the macabre nature of their mansion, with a very Addams Family vibe.

A boy named Lee goes to the Ghostbusters for help when his brother, Alec, begins acting strangely and doing bad things. When the guys decide to investigate, Egon learns a Grundel is making Alec do bad things and if something is not done soon, he will mutate into one.

The Ghostbusters' old "pal" and nemesis, Walter J. Peck, ex-EPA hatchet man extraordinaire, is back from the Gozer incident, and he's trying to raise some trouble with the Ghostbusters again. First he tries to get them arrested for illegal trespassing by calling in a phony ghost alert at a military base in Queens, but after that backfires, Peck joins up with BUFO (Bureau of Unidentified Flying Organisms), and takes Slimer with a court order. After some tests, Peck deems Slimer a hazard case and plans to destroy him with a cyclotron, forcing Ghostbusters to save Slimer from Peck.