Mag Prime
The Pokemon Avenger
In origins, Red is completing the regional dex which pretty much every game likes you to do and sort of nudges you in that direction. The same can't be said for national dex which really isn't mentioned much outside of a throwaway line in the game freak building.
In origins, Red is completing the only dex that is available - the kanto dex - as that anime is based on the original red version. It was also a marketing thing meant to introduce Mega evolution but they could have done that by letting charizard mega evolve against blue in the league. Instead, they chose to include an extra episode focused on completing the dex.
You don't have to complete the dex when you play a pokemon game, but all the games that have a national dex "like you to do it and sort of nudge you in that direction". Perhaps you don't remember this because the 7th gen games didn't have a National Dex, but every other game since B2W2 had one and completing it gave you the shiny charm.
I don't see how any game "nudges" you to complete the regional dex more than the national dex.