The medal-like thing above country names

Slurp! Oh ho~! That medal next to the country name indicates the rarity of the treasure you've obtained. Gold signifies the highest grade, silver means ordinary, and bronze indicates a crude treasure, so keep that in mind! Just like the saying, 'Even with three measures of pearls, they're not treasure until they're strung,' I hope you gather gold treasures to enjoy powerful effects!

The conditions are luck. It's a luck-based trash game.

They call it treasure. It appears randomly, but if you use the treasure chest-like item called 'Treasure Rider', you're guaranteed to get the highest quality treasure.

There are no conditions to obtain it; you can get it upon clearing based on probability. You can obtain it more easily during the Treasure Festival, an event where treasure drop rates are increased.

It drops randomly and comes in crude, normal, and premium tiers.

Do I really need to collect those in gold?

Me too... well

They call it treasure, but you need to collect all of it to make the game easier.