It's actually very simple to play and there is no time limit to complete each level. Basically you just need to move a certain number of characters through obstacles to the exit.
I think that it's the casual, single player, puzzle gameplay of the game that I like most.
No scoring needed, just making it to the exit.
You can pick and redo any level and the graphics are good enough for what the game is. Infact I'd say better than other games for WP8.
Also, I like the movement of the game as it is, makes good use of my L920 screen.
I look forward to new levels as they come.