Normally I don't give such a simple and short game 4 stars, but the logic behind the single, unique puzzle was perfect. As the game's description says, you are stuck in a room with 69,105 keys. If you can find the one unique key, you win.
The game is nothing more than a short logic puzzle. It's the type of game that I enjoy playing with a cup of coffee over breakfast, and that I will give to my 13 year old son. It will take less than 10 minutes for most people to play, and is recommended as a diversion during that quick break from work.