Played through the initial set of story levels to get to the credits and the "Your real journey is just beginning..." message. Don't think I'm going to bother logging in daily or otherwise engaging much with the F2P GaaS elements, but if you're a fan of Journey or any of the numerous games it inspired, it's still worth checking out (it's free, after all) just to see how it mixes Journey-esque levels with an MMO. The level design, story, and pacing are unsurprisingly not up to par with Journey or other top-tier games in that genre, but I had a number of nice online interactions (either passively, with messages left behind by other players, or by actively interacting with them; another player helped guide me through an obstacle-heavy chunk of one level) that add some interesting flavor to the experience. And even with the obvious graphical limitations resulting from Sky's mobile origins, the art direction is still quite nice to look at.