Impressive programming game with great potential, provides a similar experience of developing gadgets with Arduino. 

I like the look of this and the interface is implemented quite well...

I think a tutorial is a requirement for something like this as anyone who doesn't code in lua will likely not be able to get very far with it.

Great demo of lua scripting integration into an application, which is not an easy task. 

Connection lines should have arrows so you can see how input/output flows and possibly the names of connected "pins" should be printed.

It'e educational, fun to tinker with and has a lot of interesting features to explore.

This game is very nice, I like the idea of writing code to simulate things happening
Good Work!