Any game to play where you get to kill characters and figure out who did it?

If you're into board games and/or movies like, you might want to check out Clue. A classic. Even in the movie, you can make choices and choose your own ending or get a random one and try to figure out the clues in your head as the movie plays.

A quick google search turned up this one

Looking to play a Clue-like game online? 4 Best web games

Looking to play an online game similar to Clue, the classic board game? The alternatives are few. Clue/Cluedo: The Classic Mystery Game is the closest.

windowsreport.com

I hope it helps.

I searched "video games like clue"

although "mystery game" "whodunnit" are good key search terms

I personally recommend "L.A. Noire" and I've heard high praise for "Return of the Obra Dinn"

I know LA noire has some minimal adult themes and on occasion has light violence (just firefights, nothing personal or brutal) so be on your guard for that.