Quoted from PBSaltyKracker:I’m still waiting on my premium as well. Not added to my collection yet. But check out this YouTube video of the venom fluid.
It is called Ferrofluid, there are tiny magnetic particles contained within the liquid as its viscosity is heavier than the particles, as the particles are attracted to a magnet they are unable to escape the fluid so the fluid appears to be pulled toward the magnet, its cool stuff.
I did try to make a version of this to go into my own game, I had vials with electromagnets at each end that could be triggered by coils in game and it worked perfectly, however trying to make the fluid react in a way that looked visually satisfying was almost impossible, sometimes it moved in strings (perfect look for venom) other times and more often than not it moved in blobs and rounded balls - like in the video you linked, it just doesn't look or move consistently enough to mimic the look of the symbiotes in the comics, movies etc so I scrapped the idea.
It is much easier and way better looking to just sculpt the symbiote instead, which will be the effect used on my Bell Tower mod, the symbiotes jumping out of the bell tower to get away from the noise will be sculpted to look like they are stuck to the playfield glass
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