It’s funny how, when you’re poking around in the RGSS scripts, a small portion of the script jumps out at you. You then feel inspired to “tweak” it and an enhancement or scriptlet is born. That’s what happened with this one.
It’s a very simple battle add-on that flashes the screen red and plays a sound whenever a critical hit has been delivered. The colour and sound can be modified in the script to something more suitable for a game’s needs.
Copy and paste it anywhere in Materials (or above Main) and it’s ready to go.
It was created using RMVX, but looks as though it would be compatible with RMXP as well (I can’t test it in RMXP). And it’s compatible with Modern Algebra’s Damage Popup script also.