God-rank dungeon- reffered to as the inheritance dungeon this is the hardest dungeon since it will give trials that test if the challenger is compatible and worthy of the inheritance which is very hard since the dungeon itself is intelligent
S-rank dungeon-is where progenitors of a race appear.
A-rank dungeon-trials will appear for you to get to the next dungeon
B-rank dungeon-Monsters gain intellegence and learn how to communicate as well as come up with better stratagies as well as getting stronger in magic as well
C-rank dungeon-here is where monsters begin to learn magic
D-rank dungeon-here is where they begin to formulate stratagies as wells as getting stronger
E-rank dungeon-Here is where the monsters come in groups as wells as getting stronger
F-rank dungeon- considered as a beginner dungeon. has the weakest monster for ex. goblins, slimes, and etc.
Oasis Dungeon- in here people is allowed to build here since no monsters spawn and is like a oasis. this is usually used for guilds, market, and homes.