The Incubator is a game mechanic that levels up your fighter when you leave them inside it. The longer you leave your fighter, the more XP it will gain.
Since Update 29 the Incubator mechanic has changed, giving more fighter XP depending on its level, and not having a minimum/maximum amount of time for units to be put in. This new incubator can be upgraded using Yen.
The Incubator Machine is the quickest way to level up rare fighters, like secrets, divines, demonics, and heavenly fighters.
There are currently 6 incubators in the game, all located in the Time Chamber.
There are six available achievements that can be obtained that allow you to increase the maximum level of your incubators. These can be obtained by defeating one, five, 20, 50, 100, and 250 dungeons respectively. Winter Collector gave 5 levels on the incubator, however, it was exclusive to the Winter 2023 Event.
Trivia
The incubators used to be throughout all of the worlds
- World 7 (Slayer Army)
- World 13 (XYZ Metropolis)
- World 19 (Flame City)
- World 26 (Ninja City)
- World 38 (False Paradise)
The incubators used to give 1 Level per 24 hours