First I don't finished yet, but game looks cool!
Some rumbles about title: For me 401 Access Denied obviously related to HTTP and sounds wrong. Access denied it more about restriction as fact and more related to 403, but 401 more related to authorization request instead of unconditional restriction. And this combination make it feels wrong to me... But if you intent to attract more attention by this wrongness, it's work, at least with me (=
And sorry for teaching how to name your own game especially from someone with my level of English, but I can't keep silent (=