Make Your Mark was a campaign in Kingdom Hearts Union χ in which players could have a chance of getting their player name in Kingdom Hearts III. A total of 300 players from the English and Japanese versions of the app were chosen to have their names in the English and Japanese versions of Kingdom Hearts III, respectively.
In Kingdom Hearts III, the 300 names appear as Situation Commands in the fight against the massive Demon Tide in the Keyblade Graveyard. Activating a command makes Sora fire a wave of Keyblades at the swarm of darkness; at the end of the battle, Sora can finish off the enemy with a Situation Command titled Union χ.
CampaignEdit
The Make Your Mark campaign ran from April 15 to May 1, 2018. Of the 300 players in each version of the game, 100 were chosen based on the number of total logins, 100 were chosen based on their ranking in the High Score Challenge, and 100 were chosen based on the number of Toon Moogle Medals in their possession, which were distributed as free daily login bonuses during the campaign period.
In the English version of Kingdom Hearts III, only 299 unique player name and Union combinations appear. There are some players who share usernames but hail from different Unions – "Alex", for instance, was a chosen name in four out of the five Unions.