Cave, the Japanese developer behind such shmup classics as Mushihime-sama Futari, recently announced a revolutionary way to release arcade games in Japan: For free.
Not free for me or you, we've still gotta pay. But rather, free for arcade owners. Instead of having arcade owners buy costly arcade set-ups and then trying to make money back on the machines, Cave is planning to offer its arcade games for free. Nothing is free, what's the catch? Cave gets a percentage of the take earned by game center operators.