Very Creattive but I don't care for the name.
The author ought to be careful about the name. The word "Chinamen" is extemely offensive to some racial groups and even for people like me who are as "Lily White" as they come.
This is a term my father used to describe anyone who was Asian.
In his day, this was not an offensive term and it was common in everyday language.
I'm sure no offence was intended and I think if possible a simple
fix would be a name change to:
"The Cowboy vs Mi Tu Fat"
The name alone would pique interest enough to get people to come and see exactly who or what "Mi Tu Fat" is or was.
Other than the name I loved the game and I intend to tell a couple of my friends about it and encourage them to come and play.