Pokemon is a game all about discovery and adventure. In Sword & Shield, we saw possibly the biggest evolution of this idea since the games began with the introduction of the Wild Area and roving Pokemon in the overworld.
Technically that second one came from Let’s Go, and by extension, Pokemon Go, but SwSh was the first mainline game to include them. Pokemon BDSP has no roving Pokemon, and being a remake of an older game, no room to reasonably place a Wild Area.
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