I never tried it myself but I saw someone saying that "Aim Anywhere" mod allows you to aim with mouse as The Rot

i was try it but instead of shot it off all the legs and rot just falling down

I just tried Aim Anywhere, yeah doesn't seem to work way you'd want it to.
It makes LMB = Throw & RMB = Grab, but you still need movement input from Keyboard/Gamepad to move tentacles.
From what I saw in vid of someone using it with The Rot, they never move mouse to aim tentacles. (So probably there is no way to do it with mouse, at least that I know of)
Actually in vid they did aim mimicry, so it's probably possible to aim spear mimicry and similar mimicry types. (But not aim prehensile/movement tentacles)

Okay so here is what I found:
If you use mimicry via holding movement key first and then also holding Special it will be aimed at mouse position but it only works when you hold Left/Right, holding Up/Down will override direction (item will be rotated but shot only verticaly).

Also, I think it only works with spear mimicry (Including Electric&Explosive spears). Bombs, Sporepuff & similar still get aimed in movement directon.
And as I mentioned before, you (probably) can't aim prehensile&movement tentacles with mouse.

Originally posted by Gera:

was see video where guy was aim with his mouse while he was play as rot and want to cnow how to do that

it was me, it was ME (Goatling's alt account) that recorded the videos


It's simple, i used "Aim Anywhere" mod, and it seems compatible with the Rot :P