Monster Strike

Monster Strike (モンスターストライク) is a free mobile game for and  developed by.

Summary
Monster Strike is a mobile game where players must collect and enhance monsters/characters to place them in battles. The game was first launched in 2013 for iOS and Android and features puzzle gameplay and online multiplayer. The game is known for releasing crossover content with famous franchises, including and. This year they previously announced collaborations with the anime series, , and.

In August 2017, Monster Strike shut down the servers for the English version of their game.

Stone Ocean Collaboration
On July 10, 2022, XFLAG announced a collaboration between the anime JoJo's Bizarre Adventure: Stone Ocean and their mobile game Monster Strike that will begin on Friday, July 15, 2022, for a limited time.

Limited Starter Pack
By purchasing the JoJo’s Bizarre Adventure: Stone Ocean Collaboration Starter Pack for ¥980, you can also get an exclusive “Joestar Family – Jolyne and Jotaro” (★6 Transcension). This character is limited to one per person and will also only be available from July 15, 2022, to August 2, 2022.

Limited Quest Events
The collaboration will also feature five limited quest events against minor villains from the anime. These include Lang Rangler, Thunder McQueen, Gwess, Johngalli A., and Miraschon.