I'm not a fan of long, drawn out, games, where I'm fighting or building or farming and there's a million things to do to keep it going. I really enjoy puzzle games I can pick up for a few minutes, or an hour and still enjoy- beat a level and move on to the next one. This is a fun game which is easy to learn but challenging to play and it does everything I enjoy in puzzle games really well. I LOVE that the only UI is tapping the screen. I'm too old for the running- jumping- button combination games! No matter where you are in the puzzle, you can pick it up, play for a few minutes and either beat the level, or play a few more minutes until you beat it next time. Nicely done!