If you dream slime creatures, one of the first things is to ask yourself, did you watch a horror movie last night before bedtime? Or did you read literature on horror/ fantasy/ sci-fic?
The dream interpretation of slime creatures depend on their appearance and what they mean to you. Slime is sticky and controversially, slippery too. When this concept is translated into reality, it means there are bad people in your life. These people are sticky in the sense that they never leave you alone. They desire to cling to you, like a parasite that can harm its host. When the time comes to ask them to repay, or help you, they are as slippery as an eel.
This dream of slime creatures is a warning, to be careful of dubious people around you.