Scratch - Scratch is the programming language & online community where young people create stories, games, & animations.
Castle Game Engine - An open-source 3D/2D game engine for ObjectPascal.
Bingo - Programming language based on Scratch, which uses a "block" UI for building apps and...
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.
TyranoBuilder - A Easy Visual Novel Development Tool!
WaveEngine - The definitive free cross-platform mobile engine to unleash your games using C#.