Right at the beginning of Nier Automata when it shifts into a bullet hell game for a bit and the already amazing soundtrack changes styles to match I just knew I was in for an amazing experience.
A bunch of moments in Mario Odyssey come to mind, especially the ending sequence
The first sight of Botw/genshin’s open world, Gaur plains and gormott from Xenoblade 1 and 2.
The indescribable joy of feeling the wind on your face as the world opens before you
The first thing that comes to mind was my first play through of Yakuza 0. Majima spends so much time winning stuffed animals for a little girl that lost her dad. Part way through the quest line she starts calling him dad and it made him so happy. It warms the heart and I could not stop smiling.
2 of my favorite from Titanfall 2 are when:
1: During the home/neighborhood factory when you realize this is building the boss arena.
2: Using the time travel device to fight your way out of the facility in two different timelines.
Recently, Hi-Fi Rush made me smile (and laugh) more than once :)
Finally beating the asylum demon on my very first playthrough of dark souls.
Then i immediately realized i only just beat the tutorial.
Playing Dark Souls 1 for the first time has so many amazing moments like that - finally defeating the Bell Gargoyles, or surmounting Sens Fortress and pushing the Iron Golem off… But I don’t think anything will ever compare to the exhilaration I felt in beating Ornstein and Smough for the first time.