The concept of making the best civilization is simple enough for anyone to grasp, but there's a lot to learn. All of the game elements feel rewarding and worthwhile. Eight difficulties make it perfect for any level. The presentation is pretty and endearing. The game can be played again and again and essentially never ends, and if the basic game gets boring, there's scenarios and mods. Most of my top ten games get there through a deep emotional attachment or a lot of dumb fun and excitement. This one does it through fascinating, intricate gameplay.