World Boss
21:30 on Tuesday, Thursday, and Saturday, and how rank rewards stack.
World Boss is not a wandering boss. Anyone who joins and deals damage gets a reward. The boss appears in the World Dungeon, 7 o'clock from Odellia village, number 15 on the farm map.

Schedule

Tuesday, Thursday, and Saturday, 21:30. The boss has a very large health pool. Be there 5 to 10 minutes early.
Rewards

A higher rank means more rewards. Besides your own rank, you also receive every reward tier below it. The Last Hit reward does not stack that way.
The rank 1 example in the blog image receives:
- 1 Lucky Sack
- 5 Epic Refine Charms
- 150 Ngọc Phước Báu
- 300 Ngọc Công Đức
Rewards go straight into the inventory, with a system chat line. Last hit also shows a notice on screen.
If you deal no damage, or you are afk for more than 30 seconds, you are removed from the ranking board.
Ctrl+F12 hides other players' skills, characters, and pets. Press it again as new people enter. It reduces stutter during the fight.
See the Hotkeys article.