Where should I start?

Pick Kanto for a first character if you want the longest documented playthrough. Pick Johto or Hoenn if you want to help test story progression. Sinnoh and Unova suit testers who are comfortable stopping at a broken event or route.

Kanto

Best first playthrough. An official-server tester earned the Boulder Badge in Pewter. A separate local playthrough, with fixes applied along the way, recorded all eight badges, including the Silph Co. rescue, Cinnabar Mansion and Giovanni at Viridian Gym. The League and Sevii Islands have story content in the server. The eight-badge run ends before the League, so it gives us a clear checkpoint for the main story.

Johto

Active progression testing. Start in New Bark Town and choose a starter in Elm’s lab. One useful test is to beat Falkner, step outside into Violet City for Elm’s call, then visit his aide in the Poké Mart for the Egg. Later story content includes the Burned Tower and Team Rocket HQ. We’re still looking for a continuous playthrough across those milestones.

Hoenn

Active progression testing. Start in Littleroot. Rustboro, Dewford, Mauville, Lavaridge and Petalburg each have a gym battle implemented. Trying that stretch with a fresh character helps check the routes, puzzles and story events between leaders. Later content reaches Mossdeep, Sootopolis and the Pokémon League. A complete run from the opening to the Champion still needs confirmation.

Sinnoh

Expect progression blockers. Twinleaf’s opening, gym badge events and Pokémon League encounters exist. Getting from one event to the next can still leave a character stuck. A useful report names the last event that worked, the route or doorway where progress stopped, and whether you could get back out.

Unova

Choose this for targeted testing. Nuvema’s bedroom has the starter choice and fights with Bianca and Cheren. Early story content continues through Striaton’s Trio Badge and the Dreamyard rescue. Later gyms and League battles also have scripts. Testers have reported getting stuck between story events, and Unova has no interregional ferry. Pick another region if you want to take the same character elsewhere by boat.