Sinnoh features a broad range of new and classic environments for the player to explore including, for the first time in a Pokémon RPG, snowy routes. The region also features full-land geography, with only four sea routes to go through, and three lakes at the northern, western and eastern ends of the region; Lake Verity, Lake Acuity and Lake Valour. The region, also for the first time in the RPG series, is divided by a mountain range, splitting Sinnoh in two parts. This split causes some instances of regional speciation; Shellos differ on either side of the range, for example.
Cities and Towns
Areas of interest
Routes
Much like Hoenn before it, Sinnoh's routes are numbered so that they don't follow sequence directly from previously-known regions' routes. Routes in Sinnoh are numbered from 201 to 230. Compared to previous generations, there do not seem to be many sea routes; there are many land routes and mountains. The idea of routes with differing weather conditions was also brought ahead from Generation III. For the first time ever in a Pokémon game, some of Sinnoh's routes have snow covering them.
Another quirk about the routes in Sinnoh is that some of them do not go directly east/west or north/south, but actually turn before reaching their destination, most notably Route 212, which has two limbs of equal length. While Hoenn's Route 114 did this on the Game Boy Advance, it was not to this scale, so one may presume that the GBA was limited in this sense.
