It's quite clever, but I think the pedagogical function is questionable, because I don't think that the geometric interpretation will be particularly clear to players who haven't read these articles.
The idea of the game seems to be to show people that public-key cryptography exists and can work, yet the actual method of creating the public and private keys (and the fact that the public key can be created easily given the private key and not vice versa) won't be especially obvious.
The idea of the game seems to be to show people that public-key cryptography exists and can work, yet the actual method of creating the public and private keys (and the fact that the public key can be created easily given the private key and not vice versa) won't be especially obvious.