Dark Messiah of Might & Magic is a first-person hack 'n slash game based on the Source engine and placed in the world of Ashan - the same one where Heroes of Might & Magic V takes place. This game is basically what would happen if you mixed Half-Life with Elder Scrolls - an on-rails first-person fantasy adventure.
The game is a little bit old, but the graphics aren't very weary. I would say that even today they look very good, with details put both into enemies and weapons alike. The location design is also great - most of the time you'll spend in dark, moody catacombs and dungeons of sort, which can strike a bit of fear into your heart considering you don't really know what lies further ahead.
The plot is good enough to be interesting, but somewhat predictable, actually. The dialogues is what makes it stand out - the voice acting is good, and Xana has to be one of the most interesting Mission Control-type characters in video games. Mostly thanks to her sarcastic remarks for most of the game.
Gameplay-wise, it focuses almost entirely on exploration and combat. There is a lot of options you are given for fights - whether you want to kick your enemies into pits, spikes, sneak in and backstab them, sling magic spells, or just get out your sword and hack them to bits, it's all up to you. There is also a skill point system where you can buy new abilities - you'll get enough to buy most of the more useful skills, so it's all up to you whether you want to be a standard fighter, archer, mage, stealthy assassin, or a hybrid of any (getting a healing spell early on makes the game a lot easier).
The game also has a multiplayer mode with a few different gamemodes - most of which are focused on team battles with five classes: Warrior, Archer, Assassin, Priestess and Mage.
Unfortunately, since the game is old and based on Source engine, you can expect it to have hiccups here and there. I got framerate problems once and the game crashed a few times during combat, but nothing too painful.
Overall, this game is a very good first-person hack 'n slash. I recommend it to anyone who liked games like Might & Magic or even Half-Life, if they don't have anything against swapping out guns for swords.