Uh... What?
Had to make an account here to talk about this. As I never intended this to actually be on anywhere else.
If you do need proof that I did indeed make this, I can lend the source code used to make it, since it's a game that I've since no longer updated. I've actually been making a real game using the overhauled tech demo as a base:
And personally, I don't remember sharing the game at all for others to post aside from me mentioning it on threads, and going back to KYM threads (where OP said he found it) shows I never gave it out, at least publicly for people to post.
Later builds of the game have been lost over time, sadly. But I don't appreciate the fact this has been reposted on another site without asking, that is, unless you have proof I asked in any way.
Either way, this is a project I have little interest with nowadays, but it did lead me here, I guess.