UPDATE: The dev is really busy, the whole game will be completed in ETA - 'we don't really know' however everything is open source so have at the code. =3
Thanks for asking. Yes it is but we plan on expanding it in the near future. (Not any time soon so far near future lol) the dev is busy and we are recreating the entire undertale game but with the code open. Stay tuned. :)
We only have one dev (in a weekend) and he's busy unless you want to help. Go ahead. Thanks for the feedback (also I don't do any of the code, just managing the project and this was only a demo so see you soon in the next demo. (Whenever that is)
It's work in progress. The dev has been busy so just try to wait. It will be more advanced than rickygs as of now it only has the ruins. The code my dev wrote is not going to be hidden like half of the other ut game engines are. :) Your welcome.