• Mana flows through everything. Through stones, plants and animals. This flow is called the Magic Current of the world.
• When Magic Current goes too deep into the earth, the current is cut off and an alternate current is established at the surface. Thus, a vast quantity of Mana will be left to stagnate the underground.
• In such cases, the Mana condenses and solidifies into a crude crystal shape. This is how a Dungeon Heart is born.
• Dungeon Heart is a semi-sentient entity. It can think and sense, but not without external organic assistance.
• The basic consciousness originating from the magical energy bestows ample intelligence for survival.
• The Dungeon Heart will seek a fresh supply of Mana and will quickly create a path to the surface from where a small stream of energy will refresh the innards of the dungeon regularly.
• Consequently, the mana-brimming dungeon will act as a medical bay and vantage point for beasts. This will trigger various kinds of beasts moving in as residents.
• While absorbing the Mana flowing through the Dungeon, the Heart can rewrite their Beast Cores to will to stay and defend the dungeon till their last breath.
• The Mana-rich environment boosts both physical and magical properties and the beasts shall be known as Dungeon Monsters. These beings can evolve.
• Also, the Heart can use its power to create clones of the residents at least four or five times simultaneously. The higher the Dungeon class is, the higher will be the number of clones it can produce.
• Meanwhile, the Dungeon Heart will excavate and move further deep into the Earth with adequate tunnels and chambers to stall any potential intruders AKA Adventurers.
• As time passes by, the Heart will evolve into a fabulous piece of craftwork with exquisite carvings. There will be a dozen specially-nurtured monsters called Guardians to protect the heart.
• Anything that dies inside the dungeon is for it to take. The organic matter and Mana will be absorbed while weapons and artefacts will be left for fortunate fellows to possess.
• Dungeons are classified into five, based on the strength of residents and rise in difficulty. The amount of condensed magical energy also plays a vital role.
• The 'Alpha' tier dungeons houses total strength of G or F rank beasts.
• The 'Beta' tier dungeons houses total strength of E or D rank beasts.
• The 'Gamma' tier dungeons houses total strength of C or B rank beasts.
• The 'Delta' tier dungeons houses total strength of A or S rank beasts.
• The 'Omega' tier dungeons houses total strength of X or Z rank beasts.
• Adventurers go for dive in dungeons for polishing their skills and XP. The chances for increasing attributes aren't small.