Nintendo was slow to get into the mobile scene. They did so with tippy toes, so to speak, with the likes of Super Mario Run in the beginning. They’ve since released several titles in their biggest franchises for mobile devices, adapting them more to the usual mobile tactics. And as it turns out, it’s paid off for them, even if at a relatively slow pace, as combined revenue from their games have now passed $1 billion in lifetime player spending, according to Sensor Tower.

Interestingly, the number one game is Fire Emblem Heroes. While that franchise has grown significantly over the years, it’s still not at the level of a Mario or Zelda on mainline consoles. Heroes has struck a cord though, as a whooping 61% of Nintendo’s total mobile revenue comes from that game alone. Maybe more interesting is how the Mario games are all three battling at the bottom. Even Mario Kart Tour is behind Dragalia Lost and Animal Crossing: Pocket Camp, though it’s worth noting that Mario Kart Tour hasn’t been out for too long. This list does not include Pokemon titles, which are officially published by The Pokemon Company.

Nintendo hasn’t announced any other mobile efforts as of now, but the company seems to be getting pretty cozy with the market space. It’s inevitable that more IPs will make their way to your iOS and Android devices soon.