1. Populations pickup.
2. Economic control (black market).
3. Raid difficulty grasp.
4. Of 5 copies of difficult to grasp.
5. Monks professional design good, very powerful.
6. Inscriptions rub cards CD, so all the players can also be involved.
7. Farm system. (I see someone rental farm, his farm receive food.)
8. Wonderful background music.
Leveling the way non-flight, the field can see a large number of players.