UFE 1 (Source)

UFE 1.x is deprecated. Try UFE 2 instead:
Universal Fighting Engine 2

UFE 1.x only works up to Unity version 2018.3.


Universal Fighting Engine (or U.F.E.) is a toolkit designed to help you develop your own 2.5D fighting game, using a highly customizable open source framework and easy to use visual editors. No coding knowledge is necessary. For more information, visit our official Unity thread.

*Demo*

Feature Spotlight:
- Robust Move and Character editors
- A.I. Support
- Story Mode
- Precision HitBoxes
- Mecanim and Legacy Animation Support
- Combo system
- Support for Throw/Grappling moves
- Custom Input Manager
- Cinematic move editor
- Easy to use UI Tools
- Mobile Controls (requires Control Freak)
- Compatible with cInput and Rewired
- Customizable GUI scripts
- Supports custom coding and events
- Easy 3rd party implementations
- Over 150 animations included
- 3 ready to use characters
- Several free to use sound and music assets
For a full list of features visit UFE3D.com

Compatible extensions:
- UFE Extension Bundle
- Fuzzy AI Addon
- P2P Network Addon
- cInput
- Rewired
- Control Freak

Other links:
- Videos
- Official Forum
- Upcoming Features

For more videos, information and discussed features, visit UFE's official Unity thread.

For a cheaper compiled version click here.