If you simply want the (top) hardcore Pokémon Platinum experience with an American-friendly (US) interface and a hostile, isolationist (xenophobia) world, play Bloody Platinum or Platinum Eternal v2 . They are real, they are difficult, and they will make you feel like a foreign invader in your own Sinnoh.
The US version intensifies this with a in the Pokémon Mansion who says: “Foreign Pokémon could ruin Sinnoh’s natural balance. The League should ban them.” This line has no Japanese equivalent; it was added by Treehouse (the localization team), suggesting an intentional exploration of xenophobia as a theme. pokemon platinum version usxenophobia top
If you somehow unearth a ROM hack exactly named Pokémon Platinum Version USXenophobia Top , ask yourself: If you simply want the (top) hardcore Pokémon
The Definitive Experience: Pokémon Platinum vs. Diamond/Pearl The League should ban them
The game forces the player to reconcile the benefits of the outsider (stat growth) with the fear of the infection. It is a masterclass in subverting xenophobia: the thing you fear (the foreign virus) is actually the thing that makes you stronger. But the game never lets you forget it is an "infection." Once the immune system takes over, the smiley face icon remains—a permanent scar of the foreign intrusion.