Siamond is a Simon clone for NES.
Release notes:
For those interested, I have a newer version:
http://www.nintendoage.com/media/_usermedia/attachments/Siamond3%2Ezip
Some better graphics in-game (I think anyway), a more ornate title screen with music, and you have a time limit to enter your move now.
I rewrote some of the instruction screen as per Blargg’s suggestions, although I do realize I spelled “Ends” wrong. It’s been fixed.
As I post newer demos I continue to update more things, heh.