For what got me into vocaloid, it was 2020 and I was bored bc of covid and I just kind of discovered it. And project sekai and project diva are pretty different games, so you just cant say one is better. Project diva has far better asthetic appeal. With lots of great music videos with good choreography and models. And if you are a more veteran vocaloid fan youd probably enjoy project divas games more. But project sekai has a much more competative community and more vocaloids than just the cryptonloids, and a lot of newer songs. pjsk also has a lot more players because of how accesable it is. well project diva costs money. And if you were wondering, I think project diva future tone is the best project diva game. I have future tone, project diva X, and mega mix, I also play pjsk daily and I tier. sorry if this was a bit of a rant. But i just like talking about this stuff!