Why does Murder Mystery 2 have so many players?

Even after a decade Murder Mystery 2 is still one of the most popular games with over 150k concurrent users (as of 2024-06-21T23:00:00Z) and lands 5th on the most popular games leaderboard.

In fact, in 2022 you could even see the game just scraping 30k players, the game rose in popularity, quickly fell and now it’s gaining players rapidly. (As supported by the Rolimons concurrent players tracker)

Rolimons Chart

Why is Murder Mystery 2 constantly gaining and losing players in such large quantities despite not having any major updates (to my knowledge)?

I’m not being rude to those who like Murder Mystery 2, I just find the game boring.
Each update there are no new mechanics, its just new knives and guns and it just gets repetitive.