Been playing Monsterpocalypse since Horrorclix went under, and it's a lot of fun. You have six different factions, from giant robot defenders to dinosaurs. My faction is the Lords of Cthul, a group of tentacled beasts from another dimension, obviously based on the Cthulhu mythos.
Basically, each monster has an army of 15 units it can take into battle. The game takes place one of several city maps, which also contain building models that, if secured, give the monster various benefits. Of course, the buildings are usually reduced to rubble during the battle, either for power dice (allowing the monster to generate more powerful attacks) or when you throw your opponent into buildings for additional damage.
The sculpted figures are beautiful. The game is easy to learn, but can be difficult to play. Each monster has different abilities, changing how you play the game and how you battle your opponent. It's a pretty fun way to spend a few hours.