Around the end of February 2017 the developers introduced a new type of timed quest challenge.

These challenges are prompted by a player reaching a particular level of experience in the game. Also, if a player has reached that level before the challenge is introduced, they will automatically be prompted to do the challenge.

Note: This list is not complete. Please report any new information in the comments section of this page.

LevelTimed Quest
25Rare Animals
26Wolf Pack
27The Arrival of Gorillas
28Spiny Animal
29Cat Paths
30Colorful Birds
33Four Legs
35Dwellers health
36Biology Lesson
38Rabbit Recon
40Animal love
41Fluffy Visit
43Snail Family
53Ice-Breaking Party
54Crane Family
55Unusual Trees
56Boat Race
57Colorful Hedgerows
58Equipment for the Fire Department
59Chocolate Animals
60Raccoon Family!
61Music Bands
62Bear Family
63The Flower Guardians
64Australian Animals
65Iced Tea Stand
67Turtle Family