Is there any reason this couldn't/shouldn't be used for applications besides than games? Other than your motivation/goals coming from solving game development problems, I didn't see anything that makes this useful for _only_ games.
Edit: The GitHub repository implies that this could be used for purposes other than games:
> The goal is a metaprogrammable, hot-reloadable, non-garbage-collected language ideal for high performance, iteratively-developed programs (especially games).