Pokemon mini-games, pins and fireworks
Collect all 98 silver, mega pins and all mini-game medals. You will certainly get a message about the legendary Pokemon, Kyogre and or Groudon. Now this Mystery Cave's entryway will certainly re-open again. So go inside to discover Groudon and Kyogre in the Pokeball throw and discover the Pokemon mini-games. Discover Groudon in a water type stage and Kyogre in a water-type stage. Those pins have a gold border so try to gathering them all, so you will certainly get a message and some fireworks.