You can create a NCP created ''Capablanca 4PC'' putting Elephants, and Hawks and etc.
Is Capablanca chess in four player yet?

Capablanca, not Chaturanga Capablanca chess - Wikipedia

You can make the position. Just add hawks and elephants to two player chess and voila. Since it's two player, it'll never be rated anyway.

R-0,1,0,1-1,1,1,1-1,1,1,1-0,0,0,0-0-{'pawnsBaseRank':5}-
3,X,X,X,X,X,X,X,X,3/
3,X,X,X,X,X,X,X,X,3/
3,X,X,X,X,X,X,X,X,3/
X,X,yR,yE,yN,yB,yQ,yK,yB,yH,yN,yR,X,X/
X,X,yP,yP,yP,yP,yP,yP,yP,yP,yP,yP,X,X/
X,X,10,X,X/
X,X,10,X,X/
X,X,10,X,X/
X,X,10,X,X/
X,X,rP,rP,rP,rP,rP,rP,rP,rP,rP,rP,X,X/
X,X,rR,rN,rH,rB,rQ,rK,rB,rN,rE,rR,X,X/
3,X,X,X,X,X,X,X,X,3/
3,X,X,X,X,X,X,X,X,3/
3,X,X,X,X,X,X,X,X,3
there's the FEN4. Play 4 Mate obviously,
Is Capablanca chess in four player yet? I made it in it.