Like two of the biggest mobile games in the world really need any help these days.

Developer GungHo Online Entertainment is teaming up with Finnish studio SuperCell on a new cross-game event that will promote both company’s titles.

During the event, players of GungHo’s role-playing match-3 game Puzzle & Dragons will have access to characters and a dungeon based on SuperCell’s mobile strategy title Clash of Clans.

Gamers can use the Clash of Clans characters, like the Barbarian, Healer, and Goblin, to fight against and capture new monsters.

This is the second time SuperCell and GungHo teamed up for an event like this. In June, the pair launched a nearly identical cross promotion. Although, this is the first time the two are working in tandem since GungHo — in partnership with Japanese investment company SoftBank — acquired a majority stake in SuperCell for $1.53 billion.

Puzzle & Dragons is one of the top-grossing mobile games in Japan. In May, it was generating $3.75 million every day in revenue and nearly 10 percent of Japan’s population had an account for the game.

Clash of Clans, meanwhile, is a major success in the U.S. and around the world. The strategy title is currently the second highest-grossing app on iOS just behind Candy Crush Saga.