It may need a better title
NCP: Octagon

not suitable for NCP
Agreed, teaming is off the charts.
However, a sharper version of this would make an interesting WoF. I don't remember any "sharp mini-4-player game" WoFs, so that would solve the uniqueness problem as well. In fact, one of the earlier versions might just work.
lol
In talking serious, the creator is an 8pc player in fact, he might have done this with inspiration from 8pc

not suitable for NCP
Agreed, teaming is off the charts.
However, a sharper version of this would make an interesting WoF. I don't remember any "sharp mini-4-player game" WoFs, so that would solve the uniqueness problem as well. In fact, one of the earlier versions might just work.
People team on you, and you team on them for the rematch
Hooray! You've met all the requirements!

I found some more variants from 2 yrs ago that definitely won't be accepted
https://www.chess.com/4-player-chess?g=1576368-102
https://www.chess.com/4-player-chess?g=1576300-0
https://www.chess.com/4-player-chess?g=1576244-0
https://www.chess.com/4-player-chess?g=1574760
https://www.chess.com/4-player-chess?g=1572149-0
https://www.chess.com/4-player-chess?g=1570071-0
https://www.chess.com/4-player-chess?g=1569743-0
https://www.chess.com/4-player-chess?g=1382720
https://www.chess.com/4-player-chess?g=1293615
https://www.chess.com/4-player-chess?g=1680464-137
https://www.chess.com/4-player-chess?g=1680324
https://www.chess.com/4-player-chess?g=1641455-0
https://www.chess.com/4-player-chess?g=1540276-0
https://www.chess.com/4-player-chess?g=1376417-0
https://www.chess.com/4-player-chess?g=1055326 <- old tic tac toe by QIlIP not qilp
https://www.chess.com/4-player-chess?g=1055282
And these were all removed

Hooray! You've met all the requirements!
It would be easier if you did 1+1+1+1+1+1+1+1+1+1+1+1=12

Hooray! You've met all the requirements!
It would be easier if you did 1+1+1+1+1+1+1+1+1+1+1+1=12
What is derivative of x+sqrt(x)tg(x)/arsh(x)?

Lots of fun. I'm not sure if everyone commenting "bUT tHeRE's TEaMiNG," above knows that it's Ox2, but that definitely goes a long way to mitigating any potential double-attacks. Maybe it's not perfectly balanced, but it's closer to being an NCP than a WoF. We like it!
Now, can anyone show me how to give a checkmate with R+K vs K?

Lots of fun. I'm not sure if everyone commenting "bUT tHeRE's TEaMiNG," above knows that it's Ox2, but that definitely goes a long way to mitigating any potential double-attacks. Maybe it's not perfectly balanced, but it's closer to being an NCP than a WoF. We like it!
Now, can anyone show me how to give a checkmate with R+K vs K? <-----------

Lots of fun. I'm not sure if everyone commenting "bUT tHeRE's TEaMiNG," above knows that it's Ox2, but that definitely goes a long way to mitigating any potential double-attacks. Maybe it's not perfectly balanced, but it's closer to being an NCP than a WoF. We like it!
Now, can anyone show me how to give a checkmate with R+K vs K?
Finally I got accepted, and this was my 1st NPC game
I think I will create NPCs from now on
Time control: 3/4|1
First version (3/4|2, YZ):
https://www.chess.com/4-player-chess?g=10166953-16
https://www.chess.com/4-player-chess?g=10167318
https://www.chess.com/4-player-chess?g=10167375-11
https://www.chess.com/4-player-chess?g=10178109
Second Version (3/4|2, NZ):
https://www.chess.com/4-player-chess?g=10177734
https://www.chess.com/4-player-chess?g=10178199
https://www.chess.com/4-player-chess?g=10178241
https://www.chess.com/4-player-chess?g=10189269
Another Second Version (3/4|1, YZ, Created on Accident):
https://www.chess.com/4-player-chess?g=10196217-133
https://www.chess.com/4-player-chess?g=10196350
Final Version (3/4|1, NZ):
https://www.chess.com/4-player-chess?g=10196119-34
https://www.chess.com/4-player-chess?g=10196163
https://www.chess.com/4-player-chess?g=10196273
https://www.chess.com/4-player-chess?g=10196310
https://www.chess.com/4-player-chess?g=10199758-22
https://www.chess.com/4-player-chess?g=10205907
https://www.chess.com/4-player-chess?g=10206121