Ultimate Fighting Game Engine (U.F.G.E)

Easily Create Your Own AAA Fighting Game (2.5D or a 3D Arena), Multiplayer supported.
U.F.G.E is the greatest fighting game engine on the market. It utilizes Unreal Engine’s brand-new utility widget system which makes creating fighting games easier than ever before. Not only is it easy-to-use, it’s also extensive and contains many aspects you would expect a AAA fighting game to have. A system like U.F.G.E would take months to years for a solo developer to create and would cost big companies $100,000+ to develop.
Feature Spotlight:
 
Cross-platform Ready
Create Your Own Fighting Game With Little To No Coding Experience
Multiplayer Support
Advanced Combo System
Open Source
Artificial Intelligence
Character Creator
Comprehensive Moveset Creator
Easy-to-use Animation Designer 
Create a 2.5D or a 3D Arena
Minimal Input Lag (Better Than Many AAA Fighting Games)
 
With Ultimate Fighting Game Engine you can harvest the power of UE4. Here's a list of fighting games created with the engine:
Street Fighter V
Dragon Ball FighterZ
Tekken 7
Mortal Kombat 11
Injustice 2
Mortal Kombat vs. DC Universe
Marvel Vs Capcom Infinite
Samurai Showdown
Jump Force