Top free Alternatives to Project Spark for Windows
Modular games for everyone
Project Spark gives players a complete game building kit. With Windows 8, you can build puzzle games, arcade games like Pong, music games, or role playing games, all without any specific programming knowledge.
Microsoft's Project Spark uses the concept of causal relationships for building and making figures, i.e. if X occurs, then Y happens, in stark contrast to Minecraft. You test the creations in real time.