Time Anomaly is an event that appears randomly on a random level in one of the town's buildings.
During a Time Anomaly, a mechanical box with an extra reward appears along with a special gem on the game board. To receive the reward in the box, you should activate the special gem by matching with it or using a booster and then complete the level. After that, you will receive a reward of puzzles, materials, or boosters.
If you fail to complete a level with a Time Anomaly, it disappears.