Dry (https://gitlab.com/luckeyproductions/dry) is a free lightweight, cross-platform 2D and 3D game engine implemented in C++ and released under the MIT license. It utilizes OpenGL for rendering (OpenGL 2.0 required as minimum.)

For getting started, see:

Building Dry library
Using Dry library
Running Dry player application
Examples
Overall structure
Conventions
Editor instructions
Miscellaneous how-to's

For further reference, see:

Container types
Object types and factories
Subsystems
Events
Engine initialization and main loop
Scene model
Resources
Localization
Scripting
Rendering
Input
Audio
Physics
Navigation
Inverse Kinematics
User interface
2D
Serialization
Networking
Database
Multithreading
Attribute animation
Tools
Unicode support
Custom file formats
Coding conventions
Contribution checklist
Scripting API (generated)
Lua scripting API (generated)
Event list (generated)
Attribute list (generated)

For Dry related links and projects, see External links.

For credits, copyright and licensing information, see Credits & License.

For release history and major changes, see History.

Also see Porting notes for necessary changes when moving to a newer Dry version.