Ubisoft Montreal has announced that its free-to-play PC hack-n-slash The Mighty Quest for Epic Loot has entered closed beta.
In the game, you can fortify your own castle and storm ones designed by fellow players, said brand director Louis-Pierre Pharand. You'll need to employ different heroes and try out different strategies and skills to make it to the well-defended treasure rooms. Once you've conquered a castle, you can leave a "friendly message" for its creator to see.
Registration is going on now.