Easter Collection Event (BTD6)

Collection Event was an event in Bloons TD 6 released on 12th April 2019 with an update 10.0. The player received eggs for every finished map, together with ordinary rewards such as Monkey Money or medals. A number of eggs was based on a game and track difficulty. After collecting a certain ammount of eggs, the player was rewarded with a crate. After opening the crate, the player received two (or three on later stages) Insta-Monkeys. As the player collected more eggs, the crates increased in quality, requiring more eggs to open but yielding higher quality Insta-Monkeys in turn.

In 2019, the Easter Collection Event lasted 12 days, from April 12th/13th to April 24th/25th.

In 2020, the Easter Collection Event lasted 12 days, from April 2nd/3rd to April 14th/15th.

In 2021, the Easter Collection Event lasted 21 days, from March 18th/19th to April 8th/9th.

Egg rewards (2021)
Egg rewards for finishing a map were following, for default values:

However, the rewards can now be boosted if they become the Featured Egg Map for their map difficulty category. One random map from each of the map difficulties (Beginner, Intermediate, Advanced, Expert) will be chosen as the Featured Egg Map. These maps will randomize again every 8 hours. Note that all of the maps randomize again once a map has been beaten, not including if a egg status was done already.

The following values are increased to as shown below:

Egg rewards (2020)
Egg rewards for finishing a map were following, for default values:

However, the rewards can now be boosted if they become the Featured Egg Map for their map difficulty category. One random map from each of the map difficulties (Beginner, Intermediate, Advanced, Expert) will be chosen as the Featured Egg Map. These maps will randomize again every 8 hours. Note that all of the maps randomize again once a map has been beaten, not including if a egg status was done already.

The following values are increased to as shown below:

Crate rewards (2020-Present)
Each new tier of crate was unlocked depending on the number of eggs collected:
 * Wooden Crate (Tier-1) - Default
 * Bronze Crate (Tier-2) - 100
 * Silver Crate (Tier-3) - 250
 * Golden Crate (Tier-4) - 450
 * Diamond Crate (Tier-5) - 1000

Each type of crate required a specific amount of eggs before being allowed to collect the crate's special Instamonkey rewards:
 * Wooden Crate (Tier-1) - 20
 * Bronze Crate (Tier-2) - 30
 * Silver Crate (Tier-3) - 40
 * Golden Crate (Tier-4) - 50
 * Diamond Crate (Tier-5) - 70

Because of the new modification to all Collection Events, 1 of 4 tower types of Instas are able to become selected as the favored tower type, each with up to 5 uses each. When a tower favor is selected, all Instas from that chest will only spawn the same tower type; otherwise it will spawn random Insta tower types as normal. All tower favors reset every 8 hours (4:00 UTC, 12:00 UTC, 20:00 UTC), and will respawn a different set of 4 towers with 5 uses each.

Each type of crate rewarded the following Instamonkeys:
 * Wooden Crate (Tier-1) - 2 Instamonkeys, Tier-1 (high change) and Tier-2 (low chance)
 * Bronze Crate (Tier-2) - 2 Instamonkeys, Tier-1 (low chance), Tier-2 (high chance) and Tier-3 (low chance)
 * Silver Crate (Tier-3) - 2 Instamonkeys, Tier-2 (high chance) and Tier-3 (low chance)
 * Golden Crate (Tier-4) - 2 or 3 Instamonkeys, Tier-3 (high chance) and Tier-4 (low chance)
 * Diamond Crate (Tier-5) - 2 or 3 Instamonkeys, Tier-3 (medium chance), Tier-4 (high chance) and Tier-5 (low chance)

Egg rewards (2019)
Egg rewards for finishing a map were following:

Crate rewards (2019)
Each new tier of crate was unlocked depending on the number of eggs collected:
 * Wooden Crate (Tier-1) - Default
 * Bronze Crate (Tier-2) - 100
 * Silver Crate (Tier-3) - 250
 * Golden Crate (Tier-4) - 450
 * Diamond Crate (Tier-5) - 700

Each type of crate required a specific amount of eggs before being allowed to collect the crate's special Instamonkey rewards:
 * Wooden Crate (Tier-1) - 20
 * Bronze Crate (Tier-2) - 30
 * Silver Crate (Tier-3) - 40
 * Golden Crate (Tier-4) - 50
 * Diamond Crate (Tier-5) - 70

Each type of crate rewarded the following Instamonkeys:
 * Wooden Crate (Tier-1) - 2 Instamonkeys, Tier-1 (high change) and Tier-2 (low chance)
 * Bronze Crate (Tier-2) - 2 Instamonkeys, Tier-1 (low chance), Tier-2 (high chance) and Tier-3 (low chance)
 * Silver Crate (Tier-3) - 2 Instamonkeys, Tier-2 (high chance) and Tier-3 (low chance)
 * Golden Crate (Tier-4) - 2 Instamonkeys, Tier-3 (high chance) and Tier-4 (low chance)
 * Diamond Crate (Tier-5) - 2 or 3 Instamonkeys, Tier-3 (low chance), Tier-4 (high chance) and Tier-5 (low chance)

Trivia

 * On 14th/15th April 2019, egg rewards from completing Deflation Mode were nerfed to 1/4 of the normal Easy Difficulty value, due to how easy it was to grind eggs with little effort.
 * Unlike the 2019 Easter Collection Event, the 2020 event started on 0:00 UTC instead of 20:00 UTC.
 * The 2021 event started on around 9pm NZDT.