Booster Challenge is a series of five quest in Kingdom Hearts Unchained χ / Union χ, in which players can earn Boosters by completing objectives.

Booster Challenge P

 

The first Booster Challenge was available from November 9 to 15, 2017 in the English version. Players could earn P Boosters by completing objectives.

P Boosters obtained in this Event were effective until November 30, 2017.

Booster Challenge M

 

The second Booster Challenge was available from November 24 to 30, 2017 in the English version. Players could earn M Boosters by completing objectives.

M Boosters obtained in this Event were effective until November 30, 2017.

Booster Challenge Donald

 

The third Booster Challenge was available from December 20 to 26, 2017 in the English version. Players could earn Booster [Donald]s by completing objectives.

Booster [Donald]s obtained in this Event were effective until December 31, 2017.

Booster Challenge Master Xehanort

 

The fourth Booster Challenge was available from January 15 to 21, 2018 in the English version. Players could earn Booster [Master Xehanort]s by completing objectives.

Booster [Master Xehanort]s obtained in this Event were effective until January 31, 2018.

Booster Challenge Final Form Sora

 

The fifth Booster Challenge was available from February 12 to 18, 2018 in the English version. Players could earn Booster [Final Form Sora]s by completing objectives.

Booster [Final Form Sora]s obtained in this Event were effective until February 28, 2018.