Refence: Demo Defence

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* Timelines have been added: Travel through timelines to defeat new bosses
* 9 new bosses and related materials have been introduced
* Badges have been added: Defeat the bosses to earn them
* Heroes' max stars have been raised to 20, with approximately 40 powerful new traits added
* The cap for difficulty and building levels has been increased
* More researches can be unlocked in different timelines
More information can be found at in-game changelog.