Sumo battles give you rewards

[Melonhead]

When you beet a sumo tournament it would be nice ,and maybe even make more sence, to be awarded with material/currency instead of just seeing nearby locations. Maybe you would get some red or yellow recources or maybe the green and blue ones. This could even be the only way to get this two last ones or at least this would be easiest than finding them.

[Markus]

Agreed. We'll add new rewards to missions and sumo battles as soon as we have new relevant content. I'm not sure when we'll come around to work on this, maybe gradually, but at the latest when we're working on the "story progression" part on the game. You can check out our roadmap in the linked thread to see what we're implementing at the moment  Thank you for posting.