There's already been some decent suggestions. I haven't played so many that I'd be able to suggest really obscure stuff.
If a dev team managed to pull off a game with that level of reactivity, along with great gameplay/ visuals, I think it would be popular enough for me to know about it though.
Some games offer a lot of player freedom, but there's no real weight or consequence to those choices. Games like Oblivion.
Games like The Banner Saga offer choices, but they're still locked within a story that takes itself very seriously, there's no sandboxy elements to the gameplay, but there are some consequences for choices or failing certain fights, in terms of who survives and what kind of ending you get.
Hero's Adventure is a good example of the devs trying to encourage the player to do whatever they feel like, and see how far they can get, learn from it, and redo it again, but much stronger. It's not hugely complex but I appreciate the attempt and accounting for various silly player choices. It felt empty in some ways because of how many nameless non-interactable NPCs or practically cloned vendors there are.


