It is a delightful progression game that offers a variety in play. It's a merge game, a puzzle game, and a mystery story game. It is great for filling up whatever time you want to spend. Have five minutes waiting in line, no problem. Have 5 hours waiting in emergency room, no problem. There is always something to work on, and the variety in the gameplay keeps it from getting boring.Even makes a good side by side game. Because it doesn't use a time clock can work the puzzles jointly with a friend or child sitting next to you.