The best rpg games like Assassin's Creed Valhalla are Assassin's Creed Odyssey, Ghost of Tsushima and The Witcher 3. Below are 7, each with the reason it is here — and, at the end, what filtering to rpg costs you.
Filtering to RPG means you want progression — a character to build or a party to grow — layered on top of whatever else you liked.
What you get: A reason to keep going after the novelty wears off. RPGs are the genre that reliably converts hours into feeling more capable.
What made Assassin's Creed Valhalla worth playing in the first place is covered on the full list. This page is the rpg part of that answer, and only the rpg part.
The previous entry, and the better world to simply move through.
The open world Valhalla wanted to be — cleaner, prettier, and better to fight in.
Same scale, vastly better side quests.
Medieval Europe with real historical weight and no fantasy.
If you want the map to reward you rather than mark itself.
The one that started this RPG era, and the most focused of the three.
Open-world traversal and combat done at a higher standard.
Immediacy. Almost every RPG asks for a slow first few hours, and the systems that make hour forty good are the same ones that make hour one a menu.
Specifically, these are strong answers for Assassin's Creed Valhalla that are not rpg games, so they are not on this page:
The full list is on games like Assassin's Creed Valhalla — 9 picks, no genre filter.
Assassin's Creed Odyssey. The previous entry, and the better world to simply move through.
No. Assassin's Creed Valhalla released on the PC & Modern Multi-Platform, but a recommendation is only useful if you can play it, so the picks above span platforms and eras. What they share is the genre and the reason.
Whether the stats are the point. In an RPG the build decides what you can do; in an action game with stats the build only decides how fast you do it.
No. The picks below span turn-based, real-time and action RPGs, and each one says which it is.
By hand. Each pick was written for the full Assassin's Creed Valhalla list first, on what the game actually does, and this page is the part of that list that is rpg — never a genre tag lookup, which is how "best racing games like Super Mario 64" used to be a page on this site.
Or read the rpg guide for where to start in the genre generally.