Of the responses so far, this one brought me the most joy.

We call this cocktail hour.

That’s hilarious. Is the item still floating around in there?

How did you come to play a gelatinous cube? What do the other players play?

This is excellent. Most of the answers here are what game to play, in other words, what mechanics can be used to force the horror feeling. This is purely about narrative, which can apply to any system. Thank you for sharing.

Yes, I agree. As far as I can tell, these are compiled by an actual human, Darryl Mott, and the quality shows.

Dope.