Puzzle hard
Game good

惊人的优雅，不需要像其它解谜游戏一样不断引入新机制来保持新鲜感和难度，在极为狭窄的范围内塞入了惊人数量的谜题变化，真的变态

Too difficult for me - and I enjoy puzzle/logic games

What's really demotivating is how quick the game is to 'fail' you on a level. Most moves will end the level, except if you play exactly the right moves. What this creates is a very short-fused negative feedback cycle of deaths. You CAN undo your fatal moves... to discover more fatal moves.

I was also deceived by what the game play would look like. Most captures on the store page show larger environments with lots of different elements. At least in the beginning levels (which I didn't have the patience to get past) the game play is confined to very minimal 6x8ish tile grids with no special elements.