CategoryClass I Transdimensional Conduit
TypeCorporeal (dispersible)
BehaviorsAttack: Spawn
Weakness: Slime
Manifestation PointsTimes Square
Natural History Museum
New York City Public Library
Hotel Sedgewick (second visit)
Shandor's Island
Central Park Cemetery
Black Slime Portal concept art from Spook Central

Notes

Black Slime Portal is one of those entries that proves the game's supernatural ecology matters just as much as the named enemies. It is less a character than a breach point, the sort of thing that keeps a fight alive by turning the room itself into the problem.

Contact Protocol

This is a priority target, not background clutter. Shut the portal down with slime before it has time to keep feeding the room, because the spawn pressure is the real danger here.

Black Slime Portal in Ghostbusters: The Video Game