I think this game is very excellent graphic and wide sound than I expect.
It is very critical point than other game. and theme of game is very creative( save Earth and move it to the safety place ) therefore I can concentrate on this game.
But I guess one of the weakness points is operating method. It might be a liltte difficult to operate on many beginners to move Earth to target point. ( including me )
But after adopting the operation through the experience, we can really enjoy the game all over the world.
I hope this game will be one of the greatest game in 2015