A downloadable game
Hextraptions is hexagonal puzzle game based on digital logic and programmable toys. It is actively developed, but as of now only the core mechanics exist.
Some building blocks and toys are scripted in Lua, others can be made and modified within game. Toys can have components (sight, compass, radio, thruster...) to make sense of their surrounding and to move around.
Player can enter any (non-scripted) toy. Within is the same hexagonal grid on which the inputs, outputs and logic blocks are placed to create wiring. The toy will immediately behave as it is wired.
There's still ton of work remaining on GUI, sounds & music, saving & loading, and making an actual game out of it. Still, the core part is progressing quite nicely thanks to awesome powers of Lua and Moai.