With Pokemon Legends: Arceus, an open-world Pokemon game taking place in an older version of Sinnoh, around the corner, fans are thinking about just how the game's open-world concept will work. One fan has created a mockup game concept that shows their own take on how an open-world Pokemon game would work.
Created by a user known as "millenniumloops," the concept, given the name of Pokemon Adventures Sinnoh, is a four-minute-long trailer made with a combination of Blender, After Effects, and Photoshop. The trailer takes place in the modern Diamond and Pearl-era Sinnoh, as opposed to the one seen in Legends that takes place long before the main games, and shows off some of the region's Pokemon and landmarks, such as the Valley Windworks where players could catch Drifloon, in stunning 3D. We also get a look at revitalized versions of features in the original Diamond and Pearl, such as putting stickers on Pokeballs to generate visual effects when a Pokemon is called out, and there are even some shots of giving Pokemon their own clothing and accessories.
The second half of the trailer is devoted to the battle system, which appears to be in real-time instead of the usual turn-based system and also features the Mega Evolution system from the 6th Generation games. We also get to see some of the region's legendary and mythical Pokemon, including Shaymin, Giratina, and Darkrai. Millenniumloops has hinted that this is "the beginning of a long series," so it's likely we'll see more of this concept in the future. Assuming, of course, that Nintendo doesn't throw out a DMCA for making a concept for an open-world Pokemon game set in the Sinnoh region.
Pokemon Adventures Sinnoh isn't a real game, but Pokemon Legends: Arceus, which has a similar open-world concept, is planned to release sometime next year. There are also the 4th Generation remakes, Brilliant Diamond and Shining Pearl, which release this Fall.