Ummm so is it possible

… to make a thing that players can keep notes on ingame?

Could you elaborate more? Like what you mean by notes?

a way for a player to manually take notes? this might be a bit tricky.
the best way i think you could do this is make a keyboard for the player, and have the note as an overlay that’s in the corner of the screen.

An overlay will be tricky though too, might have to do a game overlay, but that’s not yeah.

Probably manually, no. But like one of those, “That one guy will remember that” yeah. You could do like notes the game automatically generated, like if it’s a clue.