ToME: the Tales of Maj'Eyal

Is Grappling affected by Combat Accuracy, Precise Strikes (particularly the crit bonus), or Unarmed Combat?

I'd assume yes for the last one, but less sure about the other two.

Maim and Takedown both can crit and use the crit tables as usual (and thus precise strikes applies).

All grapples use strength based hit checks (which takes your normal accuracy without the dex modifier) so combat accuracy does apply.

All grapples base their damage solely off talent level, strength, and the grappling stance bonus. So unarmed mastery does not increase grappling damage (but that wouldn't be a bad way to boost the tree if people feel it's under powered.)

Thanks Edge!

I don't know that grappling really needs the boost from unarmed combat, but it should probably be made clear in the description that it doesn't get the bonus.