Yakuza 0 made me experience the pure joy I felt as a kid playing videogames. Something I really hadn't felt in a long time, not since maybe Katamari Damacy on the PS2. It is a love letter to videogames, a celebration of the art form in its over-the-top action, soundtrack, and humor. The sheer amount of side stories and minigames are overwhelming, yet the majority are surprisingly well-written and fun. Yet it also has a gripping story, memorable, nuanced characters, and acting that put most AAA titles to shame. It's probably more cinematic than most of them, too. Hell, it is even a more entertaining ride than most TV shows.
I would also note that the localization here is amazing, almost never taking me out of the moment and feeling understandable without losing the Japanese cultural feel of it. Sega's localization team should win an award for their work.
The game is not without its faults, of course, and most of them seem to lie in its PS2 heritage. It could definitely do with some QoL improvements. And the fighting system, while very refined for a brawler, also felt clumsy at times, especially when fighting groups. The art direction for the city is great, and the main characters look fantastic, but the other NPCs walking around the city often look like PS2 models. I hope Y6's new engine has addressed this. Finally, I'd also say it didn't feel quite as 1980's as I was expecting. The dialogue didn't really capture the period (at least from a western POV), and I wasn't seeing people wearing pastel colors, or colors at all aside from the occasional miniskirt, which was such a big component of the fashion then. A minor complaint though.
But the fact that I put over 100 hours into it, and am still looking forward to going back and finishing all the side content in Premium Adventure mode after I finish Persona 5 should say something. The world itself is just pleasant to walk around in. I would literally just walk around the streets sometimes, always seeing some new detail tucked into a corner.
Wait, I thought Kiwami was the original Yakuza. I got that impression from this trailer, which refers to it as being "the original Yakuza" and "the game that made Kiryu a legend."
Yes, Kiwami is 1, but they supposedly added content which continues narrative elements from 0. So you really should play 0 first if you've never played any of them before. I did, and it was a perfect introduction to the series.