If you like Mysterium, I highly recommend the successor game Obscurio. Its pretty much the same gimmick of art interpretation, but works way better for groups.

Instead of the "ghost" having to keep track of and pick art for each person, the "investigators" are making a group decision so you only need to pick one set of clue art. This means the ghost's turn is way faster (doesn't explode with higher player count) and there's actually group interaction instead of each person in their own world, staring at art no one else cares about.

The way it's set up also means the ghost can start working on choosing the art for the next round while the group is debating, not having to wait to see if they are correct or not, so it's way more streamlined. All together just a snappier, more engaging version of Mysterium.