Bandai Namco updated the Digimon Linkz in Japan and added a new but currently in beta version feature the Coliseum. Using the Coliseum you can play against the others in real time and you can upload your scores to the national rank list. Of course the winners will gets extra items next to the “Winner” tag.
It is not clear when will be available the final version but you can already play against the others in the Beta edition. Check out some pictures and try the new Coliseum feature.