There are 3 or more factions actively participating in the depicted conflict and aren't allied with each other.
Alternate names: Three way conflict
Name variations: 3 or more factions
The first video game about 3+ factions was released on December 1985.
* Secondary antagonist (one of the extra factions is likely a secondary antagonist, but not necessarily)
* NPC strife (when the 2 non-player aligned factions encounter each other)
Factions, Symmetric factions, Asymmetric factions
compare with these groups