Hi again...
I've been reading up a bit about Rygar and found something slightly incredible.
12) The Sky Castle has an interesting bug. Instead of walking east on the courtyard, go north a bit and then jump left. You would expect to die, but instead you land on top of the castle walls (!) due to some wraparound glitch.
From here I managed, with some trickery and jumping corners, to go all the way on top of the walls to the entrance to Ligar! Sadly, due to a scrolling bug, I cannot enter. The door entrance seems to be exactly where the screen normally scrolls. But if this can be pulled off in some way it could save most of the 1min 46secs spent walking through the castle, besides from looking cool. (I think I just had my first "drool" experience.)
I have some screenshots and a Nesticle save state, but sadly no server space. You can contact me via: con_carnage at spaminfestedhotmailaccount dot com if you want them.
13) Just a thought: Does the game really check for all five items to give entrance to the sky castle, or does it assume that you have the rest if you have the flute? After all, you don't need the coat of arms and the armor to retrieve the flute. I have been to lazy to verify this starting from the beginning, but probably you have some save states spread out through the game. This could save two whole castles if it works (but it probably doesn't).
14) One source (
http://www.gamefaqs.com/console/nes/code/8096.html) claims that you can fly by holding autofire on A and B as you drop into a hole. I don't have autofire so I can't check this, and I don't have a specific idea for where it can be used, but anyway. Being able to fly can't hurt.
15) The same source also claims that if you stand next to the door at Belzar and face left as you are hit, you will die and then be teleported to Ligar when you press start. This sounds absurd, but you never know. You could skip three castles if it does...
Also, I checked 11) and it sadly seems to just be a graphics bug. The arms disappears whenever you press start, you don't have to use the flute. The arms reappear when you hit him. Ligar shoots just as much. Darn.
Anyway, if you start a new run, let me know how it's going.