Ok, so I've completed them all in Anniversary mode and honestly, apart from the missing Sonic 3 tracks, there's nothing wrong with this collection. I didn't even encounter any bugs! What I did find were some changes to the way physics plays out with the wider screen. I'd execute a quick move and it wouldn't quite go the way I remember it. Not to the detriment of the gameplay in the majority of cases, just different and enough to make me go "huh".

Weirdly, Sonic 1 was probably the least enjoyable game here. I don't know if it's just aged that little bit worse, or if after watching a video about just how slow some of the zones in Sonic 1 were designed I'm more aware of its flaws. But it does feel like the developers tried to make a more classic platformer out of Sonic 1 and weren't sure what to do with Sonic's high speed yet!

Sonic CD really benefits from the wider screen and special stage resets. This really is the best way to play CD and the most fun I've had with the game. It's a chaotic mess in places but the expanded perspective makes it easier to navigate and get up the required speed where needed.

Sonic 2 is still an amazing time and again, benefits from being able to repeat special stages if you have the coins.

Sonic 3 & Knuckles is my favourite game ever. It's such a shame they botched the replacement tracks and I feel that was a missed opportunity. But it still plays like a masterpiece and the little tweaks and additions to some of the games dramatic moments are mostly positive. Little changes that just tidy up or improve some of the limitations in the old games that made sense.

Honestly, I'm glad I bought this in the end. On sale :P That full price tag was a bit steep, even for these classics.

Origins has been a blast but playing through Sonic 3 is so painful. Allow me to explain, in detail, why this is the worst of the classic games, even moreso than CD.

• The level design is obnoxiously and unnecessarily long and overly winding. I realize a part of this was a decision made to influence the player to do more exploration, but when the level becomes so incomprehensible to navigate, exploration as an option goes out the door, and more often than not you wind up running out of time simply because you can't find the end goal.
• A second note on level design is how the backgrounds are way too busy. Thanks to the graphical improvements on the Genesis at this point, it made sense to push the envelope, but it makes everything a cluttered, garish mess, and often times you have trouble discerning what's in the foreground vs what isn't.
• A third note on level design is how the levels include FAR too many gimmicks. Springs that you're forced to use that send you flying so high you can't see where you're landing, ziplines that are neat but absolutely not needed and those goddamned barrels. Fuck those barrels.
• Everyone made a big stink when it was revealed the Origins collection had to replace the music in S3&K, but honestly...I don't know a single piece of music from it. It's bizarre to me that this is widely considered the best Sonic soundtrack, when the entirety of Sonic 2 (and a good portion of Sonic 1 even) are far more memorable and catchy. I listen to the Sonic 2 soundtrack regularly. I don't think I've ever listened to the Sonic 3 soundtrack willingly. Now this one is certainly more of a personal opinion, but I stand by it nonetheless
• Bizarre pseudo boss fights. At the end of every level in the previous 2 titles, you fought Robotnik, in some form or another. Suddenly, you're forced to fight these weird robots at the end of Act 1, and then fight Robotnik at the end of Act 2. It's just so...unnecessary. That's the thing about this title. So much of what's in it is absolutely unnecessary and just clutters the game, bringing it down.
• Despite them being considered one title, it's clear to me that Sonic & Knuckles is the far superior of the two, and so I don't like lumping it in with Sonic 3, because that isn't fair to it. Sonic & Knuckles continues with weird gimmicks and whatnot, but it's level design is fairly linear, and overall the stages are actually memorable again

I am approaching this from an aesthetic standpoint, not from nostalgia. Yes I'm nostalgia, and I can't deny that probably influences some things, but I'm trying my hardest to be as bipartisan as I can and look at it from a purely game design POV. Sonic 3 is just bad. Plain and simple. Sonic CD, while having its weird decisions, is at least unique enough that while I dislike it intensely, I appreciate what it tried to do and at least it did what it tried to do well. I just don't like it. But Sonic 3 is fundamentally not a good game, because it has far too many quirks and flaws that bring it down.

I hate being this critical of things I love, and I love Sonic to death, I always have ever since I was a little girl reading the comics and playing these titles, but as an adult, I am now capable of looking beyond those nostalgia goggles and seeing the cracks in them. I'm not saying Sonic and Sonic 2 are perfect by any means either. They also have weird stuff in them that doesn't really work, but the pros far outweigh the cons in those titles, and as such, they hold up better. They're genuinely enjoyable to revisit and play through. Sonic 3 is not. It is an absolute mess of ideas, none of which mesh together whatsoever.

I know I'll probably get reamed by this considering this title has somehow become considered the greatest Sonic game now, but that's a risk I'm willing to take to prove you're wrong lol