BianKO posted the notes on 25 April 2025 at 20:57 (GMT+3, Turkey time) as a "week 2 special"; OASIS had gone live on 18 April 2025. The post sits at /new/25-nisan-guncellemeleri. Watch out: the post at /new/25-nisan-guncellemeleri-1 is actually the April 28 update.

BianKO April 25 2025 patch notes
#ChangeDetails
1 Ruler items Bowl Guard mobs in Bowl drop Ruler Box; Ruler Box + 1x Silver Bar in Shozin, 3% for a random Ruler item (6% with Shadow Piece)
2 Dragon Armor 7 Sins mobs in the Garden (Bahçe) drop Dragon Certificate; craft 10% (20% with Shadow Piece)
3 Ronark Land General drop improvement
4 CZ Garden and Bowl Drop improvement
5 Special bosses KING Worm, Pidama and Yellow Sand added
6 Boss drops Isiloon and Felankor: +1 accessory drops

Ruler weapons: the Ruler Box

Ruler Box drops from the "Bowl Guard" mobs in Bowl, and any Ruler weapon can come out of it. Put the box in Shozin with 1x Silver Bar for a 3% shot at a random Ruler item, or 6% with a Shadow Piece. The monster database has no mob by that name; the one listing Ruler Box and Draki Box is "Bowl Mafia" (id 9054, level 12).

BianKO 25 April update: a flaming phoenix-shaped Ruler weapon on the ground next to a GM character
Ruler weapon from the April 25 post · Image: BianKO
Source / rights
Image / usage information: (c) BianKO / ARTY. BianKO'nun kendi sitesinde ve forumunda yayımlanan tanıtım görseli (22 Eyl 2026 indirildi); kaynak sayfa bağlantısıyla gösterilir, sahiplik iddia edilmez. · Image source ↗

Dragon Armor: the Dragon Certificate

Dragon Certificate drops from the 7 Sins mobs in the Garden (Pride, Gluttony, Wrath, Sloth, Lust, Envy and Greed, all level 83). The Shozin recipe:

  • 1x Dragon Certificate
  • 1x Fantastic Item (bought from Sundires)
  • 2x Silver Bar
  • Rate: 10%, or 20% with Shadow Piece
Dragon Armor in BianKO patch notes: a GM character wearing the red and gold armor set
GM character in Dragon Armor · Image: BianKO
Source / rights
Image / usage information: (c) BianKO / ARTY. BianKO'nun kendi sitesinde ve forumunda yayımlanan tanıtım görseli (22 Eyl 2026 indirildi); kaynak sayfa bağlantısıyla gösterilir, sahiplik iddia edilmez. · Image source ↗

New bosses and drop changes

The post only names the bosses; level and HP come from the monster pages. The site doesn't list drop rates.

Bosses added or changed on April 25 2025
Boss (id)LevelHPNotable drops
Yellow Sand (9011) 80 4,525,635 Gold Bar; party drop has +1 Ruler of the Legend weapons and +1 accessories
Pidama (9537) 70 4,505,545 Gold Bar; party drop has Dragon Scale, Mythril, Rons and of Trial sets (+1) and +1 accessories
Worm (700) 70 4,000,000 Gold Bar; +1 accessories, Hepas Exceptional weapons (+7)
Isiloon (5551) 83 1,564,000 5,500 KC Voucher, Gold Bar; +1 accessories
Felankor (7035) 83 1,981,241 5,500 KC Voucher, Gold Bar; +1 accessories

No mob is called "KING Worm" in the database. There's "Worm" (700) and "[Lord of Worms]" (9385, level 83); the table shows Worm because it has boss-level stats (level 70, 4,000,000 HP), but the site doesn't confirm the match. The post spells Isiloon as "Isilioon".

For Ronark Land, CZ Garden and Bowl the notes only say drops were improved, without saying which ones.

FAQ

Where does the Ruler Box drop on BianKO?
The notes point to the Bowl Guard mobs in Bowl. On the monster pages, Ruler Box shows up in the main drop list of Bowl Mafia (9054).
What does Shadow Piece do on BianKO?
In both crafts from this update it doubles the rate: Ruler goes from 3% to 6% and Dragon Armor from 10% to 20%. It costs 60 AB in the Power Up Store.
Did the April 25 update change the starting level?
No, that came in the April 28 2025 post, which fixed the starting level at 83.

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