Corona

The automation tower defense RTS

Desktop/Android/HTML5/iOS Java game development framework

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL.

Godot JVM GDExtension. Support Kotlin, Java and Scala.

Clone of the Age of Empires II engine

Open-source Android/Desktop remake of Civ V