The best rpg games like Jade Empire are Star Wars: Knights of the Old Republic, Mass Effect and Dragon Age: Origins. Below are 6, 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 Jade Empire 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 same studio and the same structure, with the better story.
Where BioWare took the dialogue wheel and the companions next.
BioWare at its most complete, if you want the RPG side deepened.
Chinese mythology and deflection-based combat.
Companion-led RPG with the same conversational shape.
The biggest-budget game ever set in this mythology.
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 Jade Empire that are not rpg games, so they are not on this page:
The full list is on games like Jade Empire — 9 picks, no genre filter.
Star Wars: Knights of the Old Republic. The same studio and the same structure, with the better story.
No. Jade Empire released on the Microsoft Xbox, 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 Jade Empire 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.