Square Enix’s mobile role-playing games, Final Fantasy Record Keeper and Kingdom Hearts Union χ[Cross], are celebrating Kingdom Hearts III’s launch with a collaboration that crosses familiar heroes and villains over to both games.

In Final Fantasy Record Keeper, the event runs from today through March 6, and features numerous dungeons inspired by locations from core Kingdom Hearts entries, such as Destiny Islands and the Keyblade Graveyard. Everyone’s favorite clown-footed hero Sora will make his debut in the game alongside allies like Riku, Axel, and Roxas. Players who complete these dungeons can acquire two five-star, Kingdom Hearts-themed accessories – the Dark Ring and Fire Bangle – as dungeon rewards.

Kingdom Hearts Union χ[Cross] will see its own crossover event that runs from February 22 to March 8. The “Defeat the Weaponmaster Campaign” lets up to six players team up in a multiplayer quest featuring the Weaponmaster – a Heartless based on Final Fantasy’s Gilgamesh. If the community can slay the Weaponmaster 100,000 times during the event, all players will receive 1,000 Jewels.

Participants will be able to take on Mysterious Sir, another Final Fantasy-themed foe, in a raid event that features “extremely difficult enemies” and nets players who complete it a “special reward.”

Kingdom Hearts III launched last month, and we liked it a lot. So did five million other people. You can also read our intern’s thoughts about how the new game redeems Donald Duck.