Dark Auction

The Dark Auction occurs every three in-game days at midnight or approximately 5 minutes before every real hour (ex: 1:55, 2:55, etc.) (a timer can be found here). The NPC Sirius appears in front of an iron door in the wilderness at the coordinates.

When Sirius appears at the iron door of the Dark Auction house, players must click on them to enter a queue for the Dark Auction. Sirius only allows players in that have a lot of coins in their purse, so players should bring as much money as they can. The Dark Auction only allows a certain amount in, allowing the richest in first.

If the player is not rich enough, they will receive a message telling them they need to meet the money threshold of at least a certain amount of coins (dependent on the individuals in the queue for the Dark Auction), and will not be able to warp in. If the player successfully makes it in, they will be warped to another server into the house. Players can go behind the desk to go down the stairs and enter the Dark Auction room.

After buying a certain number of items from the Dark Auction the player can talk to Lucius about purchasing / upgrading a special accessory.

Process
After 45 seconds of preparation, Sirius rains potions from the ceiling, causing all players to appear invisible. An item will be presented and will be showcased for five seconds. Players will then be able to place bids.

Similarly to the Auction House, the highest bidder wins the item. However, the Dark Auction follows a different system to the Auction House. Auctions only last for ten seconds, but the timer will restart each time a bid is placed. Additionally, players can only bid predetermined amounts of coins by selecting items displaying possible bids from a line, replacing the item with the player's head. Players can not bid lower than the highest bid, and any invalid selections are marked by barrier blocks.

Similar to the Auction House, money is immediately removed from the player's purse on bid, but it is refunded if it is not the highest bid.

There will be 4 items (7 items if Scorpius is mayor) all using this format. Once the Dark Auction is over, the back door will open and allow the player to walk back up to the house, and will later be teleported to the Hub Island.

Auctioned Items
The following items are all presented at random in the Dark Auction: Items can only appear in certain positions of the Dark Auction's order. Despite some items appearing multiple times in the order, Sirius will only sell a maximum of one of each possible item per Dark Auction. He will also not sell two pets of the same rarity but can sell two pets of different rarities.
 * Flower Minion
 * Midas' Sword
 * Spirit Mask
 * Ender Artifact
 * Wither Artifact
 * Parrot Pet ( or Rarity)
 * Turtle Pet ( or Rarity)
 * Jellyfish Pet ( or Rarity)
 * Travel Scroll to Dark Auction
 * Travel Scroll to Dark Auction
 * Travel Scroll to Dark Auction
 * Travel Scroll to Dark Auction
 * Travel Scroll to Dark Auction
 * Travel Scroll to Dark Auction

Darker Auctions
When Scorpius is elected mayor and his perk is available, there will be seven items auctioned instead of four. The auctioned items will be randomly selected from the possible items available from that round.

Trivia

 * At peak hours (12 P.M.- 4 P.M. EST) players may need up to 70 million coins to get in whereas at night it can be possible to have under 1 million and still get in. The bare minimum needed to get in is 400K. You will be turned away otherwise.
 * Once the player has been in the Dark Auction once, the days of which the Dark Auction takes place will appear on their Calendar. The player will also receive 1000 coins.
 * If the player participates in a full Dark Auction, they will get a secret achievement called "Sirius Business" which awards the player 10 achievement points.
 * The music heard within the Dark Auction is C418 - Stal.
 * Despite there usually being upwards of 20 players in it, there can sometimes be a very low amount, like 3 or 4.
 * If Scorpius is elected mayor, he will intrude the Dark Auction and bring three additional rounds and new special items.
 * Sirius is one of the few NPCs that sell pets(not counting the Spirit pet from the Floor 4 boss chest) as well as Bea, the Fear Mongerer, Diana, and Oringo, selling the Jellyfish and Turtle pets, the Bee pet, the Black Cat pet, the Griffin pet, and an assortment of Zoo pets respectively.
 * When Dante is elected, the iron door in front of the Dark Auction house that's supposed to be closed opens, and when you head down the stairs, Sirius is replaced by Seraphine, which seems to be scheduling a Resistance.

History
Тёмный Аукцион 暗黑拍卖会