Crash Bandicoot 4, leaked by Taiwan Digital Game Rating Committee, came with the game’s description which said:
Crash is relaxing and exploring his island in his time, 1998, when he finds a mysterious mask hidden away in a cave, Lani-Loli. The mask is one of the Quantum Masks and apparently knows Aku-Aku, Crash’s mask friend! With the Quantum Masks returning and a Quantum Rift appearing near our heroes, they decide to bravely head through to different times and dimensions to stop whoever is responsible.
As well as the leak, Activision began hinting at Crash Bandicoot 4: It’s About Time yesterday when it sent a 200-piece puzzle to press signed “A little something to help you pass the TIME” from “Your Favourite Bandicoot”.
The mask that is depicted in the puzzle is the same one that appeared in Playstation 4’s promotional video “It’s Time to Play” in November 2019.