Complete tasks each day to earn tickets. The more tickets you get, the better your chances of winning one of these awesome prize packs! — In game description
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The Sweepstakes Event is an event in Bloons TD 6. It was added to the game files in version 49.0, but it was not publicly revealed until version 49.3. The objective of the event is to complete challenges to earn tickets in order to enter the sweepstakes. A new challenge unlocks on each day, and each challenge has multiple milestones to reach to earn more tickets. The more tickets a player has, the more likely they are to win. It is unavailable in Bloons TD 6+, Bloons TD 6 NETFLIX, and the Chinese version of the game, and there are restrictions on which players are allowed to participate per the terms and conditions.
A player can only participate in a Sweepstakes Event if:
They are located in Australia,[1] Austria, Brazil, Canada, Czechia, Denmark, Finland, France, Germany, Hungary, Ireland, Japan, Luxembourg, Macao, Mexico, the Netherlands, New Zealand, Norway,[1] Peru, the Philippines,[1] Poland, Singapore, South Africa, South Korea,[1] Spain, Sweden, Switzerland, Taiwan, the United Kingdom, or (except for the states of New York or Florida in the first Sweepstakes Event) the United States.[2]
They are not playing on an account flagged for cheating.
Players found using multiple accounts are disqualified.[2]
Tickets
There are two ways to earn tickets: participating in the challenges and using referral codes. Each participant is assigned a unique referral code that other participants can enter (a participant cannot redeem their own code). A player can earn a maximum of 150 tickets.
Source
Tickets
Copying the player's referral code
2
Getting the player's code redeemed by another player
5
Redeeming another player's code
3
Completing challenges
Tier 1
1
Tier 2
2
Tier 3
3
Tier 4
6
Tier 5
8
Tasks
One set of five challenges becomes available on each of the first seven days of the event. If multiple challenges have the same scoring requirement, then progress goes towards all of them at the same time (for example, popping Bloons counts towards all five "Pop Bloons" challenges). If the player completes a challenge before any previous challenges in the same set, they won't be able to claim the tickets for it until all previous challenges in the set are completed as well.
Types of tasks
Name
Notes
Beat Maps
Challenges that require playing on a specific difficulty can be done on any game mode of that difficulty (e.g. Reverse will count for Medium and CHIMPS for Hard).
Scores can be done on the same Event, and the score doesn't need to be better than the previous one. Replaying a previously completed Odyssey also counts.