There is an achievement for checkmate by castling !
Checkmate by Castling

I created a tournament to get this rare achievement -- I can't wait for it to happen in an actual game.
https://www.chess.com/tournament/rare-achievement-unrated/join

This happened because my friend is new to chess:

Now I'm wondering what's the minimum amount of moves to get a mate by castling. I have the hunch that it can be achieved in 8 moves (because that's how many moves it takes for the white king to reach the 8th rank), but I'm having difficulties finding the moves.

Ok, I found it. 8 moves.
I love it! That king is a little too overconfident and not a team player.

i did it just now and it was sooooo cool. plus it was not in a endgame like other mates it was in mid game
https://www.chess.com/game/live/70282938437

i did it just now and it was sooooo cool. plus it was not in a endgame like other mates it was in mid game
https://www.chess.com/game/live/70282938437
That's cool
I once got a castling checkmate, but I was up 3 points. It was a queenside castle checkmate in the middlegame, his king was out in the open because i had pushed it there