Maybe for 1990 they would have been revolutionary, now they are just cheesy looking. You can display the graphics in two modes, low and high resolution. To be blunt, there is nearly no difference except a tiny bit of smoothing in the high resolution. The animations of your characters and monsters are acceptable but hardly state of the art. Everything is quite small, so there is very little detail to anything.
Monsters especially have few animation sequences so they always look pretty much the same.
Terrain and backgrounds look OK, but everything has a blandness to it. This is partially due to the 256 color graphics, partly due to very unimaginative textures and coloring. The revolutionary bit, I suppose, is that you can rotate the display through 360 degrees to see it from any angle. On a more positive note, the cut scenes are generally pretty well done. On the sound side, the music is the same track over and over and over.