Dungeon Master

The Good
A well-balanced and engrossing CRPG. Dungeon walls with real texture, terrifying monsters appearing around a corner. Challenging environmental puzzles involving doors, switch plates, traps, and much more. Unique spell system that players learn by finding spell scrolls and experimenting.

The Bad
An amusing bug allowed resistance items (e.g. fire resistance) to stack to a point where spells did negative damage... Except that they used unsigned arithmetic, so a small negative number turned into a huge positive one. The better you're equipped, the faster you die. This is almost a positive - It's the most terrifying RPG I've played. Another bug could cause the game to freeze in the endgame if you used items in almost the correct way to win. However, these are rare exceptions in a mostly very solid program.

The Bottom Line
Any aspiring RPG designer needs to play and study Dungeon Master. Players who think that a CRPG can't approach the tabletop experience should play DM and be amazed. Dungeon Master is a truly great game, and I wouldn't mind playing it again today.