I'm not the biggest fan of Sam Barlow's previous work but I think I had a pretty good time with Immortality? It's hard to say LOL

It is quite obtuse and it's very possible to spend a good four or five hours scrubbing through seemingly plain movie clips without getting to The Good Stuff. That being said, the three films look great and really nail the time period they're from, leading to a unique experience you won't get elsewhere

Also it seems that the ending sequence/credits isn't set in stone and players have been reaching it at different points. I feel like I reached it way too early, when I really didn't know that much about The Mystery and it ended up feeling very underwhelming as a consquence LOL at least it drops you back in afterwards to explore more