Heretic II

The Good
While short on actual role-play elements, the fantasy world in Heretic II was well designed (the levels themselves another story, though). The different environments, from the city where you start the game through to the tower of the final boss, look beautiful, and the game does have a few exceptional set pieces.

Character design was above average for a shooter, and both the voice acting and cutscenes helped to make the experience more enjoyable.

The Bad
Unfortunately, the game was very linear, even compared to other shooters. Worse, this was made more apparent by the short length of the game as well as the actual level designs. Had Raven could have added in more locations, and broke away from the strong linear fashion of the game, this could have been a far better game.

The Bottom Line
If you're interested in the original Heretic and Hexen games, it's worth picking up.