Raven is good for the first act and terrible after that.
I played Day of the Tentacle remastered yesterday. As a kid it took me weeks to beat. Finished it in 5 hours yesterday. I was a dumb kid.
I've had the same experience a while ago and I really, really wondered how the hell I played games as a kid / teen. I (think I) remember spending weeks on Monkey Island, FoA, Broken Sword, The Serrated Scalpel, and lots of others, loading them up every day for at least a couple of hours. I guess I was more patient back then but how did I not "beat" them after a week or so at most? I guess I might have just sucked but, then again, we also managed to figure out how to play simulation and strategy games like Sim City, The Guild, Capitalism, and whatnot as kids, often without *cough* a manual -- some of those, I probably wouldn't even touch today anymore because I'd consider them too confusing. So, I don't know, somehow replaying games from my childhood makes both my former self and my current self feel incredibly dumb at the same time.
Also, yeah, Raven isn't good. Its setup is somewhat interesting but it all falls apart very quickly and the second half of the game (originally released as part two, I think?) is a repetitive, boring mess.