>>40353553Not necessarily has to be this way to be more mature. This can be done through aesthetical choices, such as making an overworld with less saturated colors and more detailed shapes, making the pacing of the game a bit slower, making the Pokémon textures more detailed, like an in-between of Pokken and Mainline, and making some route and town music less upbeat but more calm, so when you enter to a certain small town, your drive and feel isn't "Let's go play", but rather "Let's enjoy the morning sun in this town".
Foreshadowing some backstory with adult fears is also a nice choice but that doesn't have to be force fed to you.
If it's a spinoff what we're talking about, mechanics should also be changed, in the way of limiting yourself to go everywhere with only your partner Pokémon and nobody else, so you actually have to take care of him or her.
>>40353942Most parents just give their children a smartphone and download any F2P game their kids want to keep them quiet.