We have to admit, we were all fans of the classic Ghostbusters movie. We watched it repeatedly over the years and memorized all the names of the different characters (Maxwell, Spengler, Egon, etc). It was also interesting to know that a lot of people actually believed that the movie took place in another reality, as we saw a lot of ghostly beings. However, there is one problem with the whole idea of a parallel world in the movie - Spengler (Rudy) was actually referring to a sort of paranormal reality.
As ghost creatures may be real, but they are not supernatural in nature. They are simply something that can happen, but it doesn't mean that they will. So, how would it be possible to depict ghosts, or other ghostly creatures, in an online game?
The way to do this is by creating a game that allows its players to control the appearance of ghosts, and other creatures that can attack players. There are a lot of ways to do this. For example, by using ghosts as a form of defense or offense. Ghostly creatures have the ability to react on their own, while the player has the ability to control them. They can also be used as a form of resource to help you advance through the game.
Another way to make this happen is by the way in which the game's ghosts will react to you and your actions. For example, if you are chasing your enemies, and they get too close to you, you might get a hit on yourself from the ghost's reaction. This ghost will be able to attack you. And this is an excellent opportunity for you to use some of your resources to help you escape from them.
Of course, you should avoid making a ghostly "game" as a means of trying to create an online game where ghosts are nonexistent. This might make the game too easy and make it more boring than it already is. If you want to make the game scary, the only thing you can do is to let your imagination run wild and to use your favorite movie in order to make the ghostly creature's a real thing.
Instead of making these types of games, you should look for ghostly computer programs that you can use for your game. Most of these programs already have built-in versions of real ghostly creatures and ghostly elements, so you can just download those and include them in your game. If you don't have any such programs, you can still build your own.
In the original movie, you see a lot of men from a consulting firm, who turn out to be aliens. If you take the time to make your own aliens and have them fight with other computer-generated ones, you can then make your own game where you are able to give some choices to the player. You can either show some loyalty to the player (which will lead to them defeating the alien), or some loyalty to them (which will cause them to become their slave).
The only rule is that whatever you do, don't make a game where the player gets hurt because of the creatures. If you do that, you can expect a lot of players complaining about how unfair it is.