Entrance
- Admission in groups of 1 to 8 people. All group members intending to join the defense must be at the defense entrance location.
- The number of players entering the defense affects the number of monsters in each wave.
- The optimal number of players for defense is 4.
- If the group consists of more than 4 people, the chance of the group receiving rare rewards in each rotation (see below) will be halved.
- Exiting the defense by a group member or leaving the game does not affect the mechanics of the ongoing defense.

Heart of Defense and Waves
- The main task of defense is to protect the heart of defense. In case of defense failure, the defense ends, and all players in defense lose all items dropped by monsters and rewards obtained during the defense.
- With each wave, the strength and HP reserve level of monsters increase, and an MVP appears on every 5th wave.
- After completing each 5th wave, players receive a special defense bonus, rotation reward, and a portal appears for exiting the defense. By passing through the portal, the character leaves the defense and receives all accumulated items and rewards.
- The exit portal opens for a short time. If a player fails to pass through the portal, they cannot leave the defense until the next portal opening.

Rotations
- Progression through defense waves is divided into rotations, which determine the rewards received after every 5th wave.
- Rotation A: every 5th and 10th wave (5, 10, 25, 30, ...)
- Rotation B: every 15th wave (15, 35, 55, ...)
- Rotation C: every 20th wave (20, 40, 60, ...)
- Each rotation has its unique list of possible rewards.

Defense Bonuses
- After completing each 5th wave, all players receive one random defense bonus. The bonus applies to all players in the group. Defense bonus effects stack. The more waves completed, the more bonuses apply to the group.
- Common bonuses:
+10% EXP
+5% Physical Attack
+5% Max HP
- Rare bonuses:
+5% Magical Attack
+5% Item Drop Rate
- Unique bonuses:
+5% Chance to get the item twice

Drops, Items, and Backpack
- Experience modifiers and item drop chances operate in defense as in the normal world.
- Automatic item collection does not work in defense.
- Only items with a natural drop rate below 3% can drop from monsters in defense.
- When a player picks up items, the usual item sharing mechanics within the group apply (if item sharing is active in the group settings).
- Upon picking up (or receiving) an item, it does not go into the character's inventory but is placed in a temporary backpack. Items in the temporary backpack can be viewed using the command @backpack. Items placed in the temporary backpack can be retrieved by passing through the exit portal on every 5th wave. If the heart of defense is broken or a player leaves the game, all items in the temporary backpack will be lost.
- The defense bonus 'Chance of Double Item Drop' provides a chance of obtaining double the dropped item. When picking up cards or card albums, the overall bonus activation chance is halved. The bonus does not apply to rotation rewards received by the group.

Rotation Rewards
- All group members receive the same item as a rotation reward.

Rotation A:
- 5 x Elunium
- 5 x Oridecon
- 1 x Royal Scroll III
- 1 x Copper Coin Bag
- 5 x Pumpkin Cake
- 5 x Cookie Bat
- 5 x Vote Coin
- 1 x Bronze Chest
- 5 x Old Blue Box
- 10 x Musical Note
- 3 x Box of Thunder
- 3 x Box of Gloom
- 3 x Box of Resentment
- 3 x Box of Drowsiness
- 3 x Box of Sunlight
- 3 x Guarana Orange Candy
- 3 x Guarana Purple Candy
- 1 x White Slim Potion Box (100)
- 1 x Blue Potion Box (25)

Rotation B:
- 1 x Silver Coin Bag
- 3 x Newstyle Coin
- 3 x Battle Badge
- 3 x Royal Scroll III
- 3 x Magic Power Potion
- 3 x Attack Power Potion
- 3 x Defence Potion
- 1 x Silver Chest
- 5 x Old Purple Box
- 1 x Stat Food Box +10
- 1 x Race Ring
- 5 x Void Essence
- 1 x Purified Elunium
- 1 x Purified Oridecon

Rotation C:
- 1-2 x Gold Coin Bag
- 5 x Newstyle Coin
- 5 x Battle Badge
- 5 x Royal Scroll III
- 1 x Old Card Album
- 1 x Gem of Attack I
- 1 x Gem of Magic I
- 1 x Gem of Defense I
- 1 x Mainspring Screw (Backpack Skin)
- 1 x Ancient Branch with specific MVP
- 1 x Golden Chest
- 1 x Enriched Oridecon
- 1 x Enriched Elunium
- 1 x Blacksmith's Blessing