Dungeon Master

The Good
This game took time and patience to complete and could be incredibly frustrating but you always knew you were going to play it to the end. When I played this when I was younger some of the enemies were genuinely frightening. There are many emulated versions of this game now (some in java/flash) - try it out!

The Bad
Sometimes finding endless keys to open doors became a little repetitive. The final level was incredibly tough, people who have played it will understand.

The Bottom Line
A terrific early RPG type game that still plays well today, just make sure you have a few spare days to play it.