Originally posted by Trakehner:

Nope. Single player with co-op for up to ten players.

No enemy bases to take over. There are biomes to explore (meadows, black forest, mountains, plains. 3 biomes left to be completed: mistlands, Ashland, deep north), bosses to kill. Look at the games official page for more info.

4 biomes- they've said they're going to do stuff with the ocean.