Two new titles are ready to be unleashed on Live Arcade this week, the first being Brain Challenge (800 Microsoft Points), while the other is Bliss Island (400 Microsoft Points).

If you're the type of person who demands more than just entertainment value from your games, then by all means gather up some points in preparation for Brain Challenge. As if the name alone wasn't enough to give away the premise, Brain Challenge is another one of those mind exercising games, complete with multiplayer so you and 3 others can train together.

And then there's Bliss Island, a game based around a "mystical blue creature" that can form clouds by emitting puffs of air. Your goal is to lead Hoshi the Zwooph (such a fitting name, isn't it?) to victory in over 25 different challenges, and should any of your friends purchase Bliss Island, you'll be able to play against them over Xbox Live.

Do you think either of these games will be any good?