Worth checking: the light. The board relights along your own route on a win, the Key casts light onto the board as you drag it, and a chime and ring fire when a move leaves you one from solving.<br><br>The two new worlds - Counterfall (drag a stone, its partner slides the other way) and Tidewatch (a plate holds a gate open). Counterfall's pairs are likeliest to be wrong.<br><br>Also: Your Path
Only the current version so far — new entries appear as the game ships updates.
A relaxing sliding-block puzzle. 300 levels, 10 worlds, no timers and no lives.