The game is mostly patternized, with a few random elements in terms of what artifacts appear. The graphics on Rygar are identical to the arcade version. Both Rygar and the demons are clearly distinctive, detailed, and animated identically to the arcade. The landscape is done in two-level multilayered scrolling, with nice details and some background animation. While it's not Mickey Mouse and the Castle of Illusion, it is sufficently well done.
Sounds are a bit weaker, however.
Fortunately, you can turn off the music by pressing Option 2 before starting the game. Though there are only 23 levels, the lack of a level skip and game continues means this is an average-difficulty endurance contest which will take some time to finish. This game can't get much better. 7 - 5 Good. Average game, could be improved.