Thanks for the feedback and playing my game.
The game segfaulted after I've lost it, but I've enjoyed it nevertheless.
Yes that actually when you close the game, the segfault is in the code that de-initialize the Javascript library which for this game is totally useless... but I wanted to spend my time during the jam concentrating on this game, not on unrelated feature of my game engine.
Have you considered using Guile instead of s7 to embed to your game engine? It is the GNU's official scripting language.
Actually yes, but s7 have this nice feature of been only2 C files, which make it very easy to integrate to a game engine, and remove the dependency burden ti would be to manage another big project as guile.