If Zen Bound for iPhone and iPod touch was foreplay, then Zen Bound 2 for iPad is the full act.
The sequel to 2009's most innovative iPhone game is concerned less with further invention than with realising its full potential, unbound by the larger iPad screen. While the lack of new gameplay elements makes Zen Bound 2 a predictable follow up, the phenomenal design inherited from the original demands little change.
Scores of new levels and alluring high definition visuals are enough to make a worthy sequel, even if there's little new when it comes to gameplay. Zen Bound 2 is an evolution that focuses on improving its subtle charm rather than layering new elements and features.