So I went to search for some Medieval Engineers servers to test something, but when I ran the search the results were a bit surprising. Three servers total for the game. No filters or anything, just every single public server listed, and there's three. And no players. Even Ricochet, released back in 2000 as a little throw-away minigame thing using the HL1 engine, is beating it with 4 people at this moment playing, and 14 total servers. More popular than Medieval Engineers.