Castle Ravenloft lets up to five different heroes loose in a randomly generated dungeon to battle evil and save the world, and it pretty much garuntees an exciting adventure every time. There are 13 adventures to choose from, each dictating win and lose conditions as well as special events and monsters to keep things interesting. As your heroes set off on their adventures they explore the dungeon's random layout, fight random monsters, pick up random treasure and fall foul of a series of random events. The set up is just complex enough to keep the game different and exciting every time, and simple enough that you can pick up the rules fairly quickly, with Sequence of Play cards keeping everyone on track.
This game is cooperative. There are five Heroes, each with different powers and abilities, but all working together to get through the dungeon alive. There's a Wizard, a Cleric, a Ranger, a Thief and a guy who looks like a dragon and can breathe fire FTW. Some characters confer bonuses on the heroes close to them, and it's good fun chatting with other players to work out how best to tackle monsters; and it's great to see your characters pull off an improbable chain of butt-kicking with some canny use of powers and treasure items.
The monsters look ridiculously good. This game comes with a ton of great looking (unpainted) plastic miniatures (just over twenty, I think), and the monsters are as vicious as they look (apart from the zombie, he's just a lost sole. Awww). One of the key features of the game is that each monster is controlled by the player who initially stumbled upon them. Their behaviour is dictated be a Monster Card - a tick list of the nefarious actions they are to fulfil in a given situation, giving the player a little leeway with regard to the monster's precise movement. This means that a)there's no need for a 'baddie player' and b) players can predict the movements of incoming monsters and try and work out how not to die.
With some random Events thrown in for good measure, and more powerful Villain monsters for certain adventures, the dungeon really comes alive, and even the missions you team fail will have plenty of near-miss moments and heroic daring-do. Though the Event cards can sometimes be a little harsh, even the anguish of failure can be pretty funny when shared by a group.