I don't have a complete set of ROM's so i couldn't look through to find it. My memory is bad, but I so loved this game!
You fought dragons as bosses at teh end of each level
You had a sword and shield, maybe you got different swords as you progressed through the game?
you had to climb chains and avoid bats or fireballs as you neared the final boss
there were secret areas you could swing your sword at and the rocks would break apart revealing power-ups. 2 that i remember are:
1 at teh very beginning of the game you went left instead of right. There was a vertical cliff. you swing your sword and it opens up one block. swing again and it opens another block and there was a shield there
2 somewhere you are climbing up a rope/vine. you swing your sword to the left (another cliff) and it opened up to reveal another weapon or shield.
Sorry, I know that's sprse, but I remember the name was very difficult to read on the marquee. This game took all my quarters on a regular basis until I could finally get through on 1 quarter. Once you finished the game that was it.
Oh, i hope someone can help me out here. I looked through KLOV but I dunno what it's called. Def. not Rygar...