B Coin Auctions are marked on the World Map with this icon

B Coin Auctions appear at random locations and random times. After the Auction spawns there is only a limited amount of time the players can join. To join a B Coin Auction each player pays a certain amount of B Coins depending on the B Coin Auction Prize- the higher the base prize is the higher the entry fee. The entry fee from each player is added to the base prize.

After the entry time passes the B Coin Auction is closed to other players and the bidding timer starts.

Each player can bid multiple times until the bidding timer ends and the player with the highest bid wins the base prize and all the B Coins from the entry fees.