OKaM seems best imo.
Or OKM.
okam already used by some sort of game studio
OKM
might be better to use for Googling.
of kings and men apparently is some sort of D&D game on google as well.
I kind of liked the M:BG myself better. Seems honestly like a bad idea to go changing the name after you've already launched a kickstarter under another name and have *some* presence already on the web, but I didn't read the reason for the change.
I just hope the game gains traction and a following.