The official Japanese Digimon game Twitter account has launched a retweet campaign for Digimon Story: Cyber Sleuth Hacker’s Memory to add four new Digimon (teased above) to the game via a free update.

If this tweet gets 2,018 retweets by January 5, 2018, Bandai Namco will release the update at a later, unspecified date.

Digimon Story: Cyber Sleuth Hacker’s Memory launched for PlayStation 4 and PS Vita in Japan on December 14, and is due out in the Americas and Europe on January 19, 2018.