Free-to-play co-op action RPG Monster Strikeis bowling through all the puns, if its latest financial report is anything to go by.

The mobile game brought in $378 million in sales for its Japanese developer Mixi between 1 April and 30 June this year.

A bit more than pocket change

That works out as a tidy $4.2 million a day – and interestingly, an analysis of the figures has claimed that nearly 100 percent of Monster Strike’s sales have been scooped in Japan.

Still, even as Mixi shuts down the game in China, However, the developer revealed plans in its earnings report to launch a "large scale marketing" campaign in North America during the next quarter.

Elsewhere, Mixi posted $127.9 million in net profit for the quarter. That sets it ahead of other industry behemoths such as EA (who in the same quarter reported a net profit of below $50 million) and has sparked whispers that it will become the next Puzzle and Dragons.