This game is the third installment in the D&D "Adventure System" of board games. If you're in search of more opinions, you should definitely check out the reviews for Castle Ravenloft and Wrath of Ashardalon, as the games are all very similar. I also own and enjoy Castle Ravenloft.
They all use very loose adaptations of 4th Edition D&D rules. This particular game is (obviously) based on R.A. Salvatore's books about dark elf orc-stabber extraordinaire, Drizzt Do'Urden. As such, all the adventures are based on Drizzt's literary exploits (all the way up to Gauntlgrim, I was surprised to see), and the choice of heroes includes the Companions of the Hall, and there are rules for playing as (as well as against) the notable trio of ne'er-do-wells Entreri, Jarlaxle, and Athrogate.
Playing the Game
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Each player chooses one of five pre-made heroes, and then chooses which of that hero's powers they'll use for the adventure (you take 4 or 5 out of around 10). Next, you follow the Adventure Book's rules to setting up whatever adventure you're playing (there are about 15 different adventures), and you make your way through the dungeon trying to complete the adventure's objective.
The "board" is made up of jigsaw puzzle-style pieces which you shuffle before the adventure like cards. You start with one tile as the "start tile", and then each player has the chance to draw a tile on his or her turn and add it to the tiles already played, which I'll get into next. This is how the play area expands.
Each player's turn follows the same order - move and/or attack with your hero, add a dungeon tile (unveiling a new monster), then activate the monsters you've unveiled. So, each player controls not only his hero, but the monsters he or she reveals. This is done by following the instructions on the monster's card, which tells you how the monster acts.
When a player dies, he or she uses a Healing Surge, which acts like a "continue". If a player dies and there are no Healing Surges left (you start most adventures with 2), the players lose. So, it's a no-man-left-behind situation.
You win, as I mentioned, by completing whatever objective the adventure sets out. Usually, this involves reaching a specific tile and killing whomever is hanging out there.
Enjoying the Game
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At the end of the day, this is a very streamlined game. The heroes have no stats other than AC, HP, Speed, and Surge Value (the amount you heal when you use a surge). You don't equip your guy, you can't level up past Level 2 (which entails adding 2 HP, 1 AC, and a new daily power), and there is no continuity between missions.
Strategically, the game is pretty simple. You don't have a whole mess of options, and sometimes it can be pretty obvious what the best move is, meaning the game can feel like it's playing itself sometimes. Honestly, when I first started playing these Adventure System games, I was disappointed. Being a "gamer", I'm no stranger to complex rule systems and this was just too simple for me.
But then I added friends. And not just any friends; non-gamer friends. Non-gamer friends, and booze. And jokes. And silly descriptions, and trash-talking (despite the co-operative nature of the game), and bouts of not paying attention. Basically, everything that absolutely ruins a regular D&D session.
The simple nature means there's very little to keep track of (once everyone learns the flow of play), and you don't need to clear your entire calendar to schedule a session. I've had a blast every time since then, and the game has quite a following now among my gamer and non-gamer friends alike.
If you go into it expecting it to be a very rich, very complex board game version of D&D, you're not going to be happy. But if you recognize it as the big box of toys that it is, man can you have some fun.