Once I was done with Pikmin 1, I decided to go ahead and immediately try the second one since they're both on the same cartridge. And... yeah, it's not good. It takes the original structure of Pikmin 1 and adds a lot of cool ideas to it. However, most of these ideas are added on top of the original game with no thought behind them, and they end up actively harming the overall experience.

Let's start with some positives: The overworld is gorgeous. It takes full advantage of the Gamecube hardware, as the development team is now a lot more comfortable using it, and it really shows. The maps in Pikmin 2 are mostly edited versions of the maps of Pikmin 1, but it's honestly quite hard to tell with the graphical change. The same applies with the new enemies and characters, they all have fun new designs that feel really special, and I really like all of them.
The main story isn't quite as strong as the original game though. Turns out that, while Olimar was stranded on Earth, the company he works for came into some financial hardships, and now they're in debt. The company's CEO tasks Olimar and his coworker Louie to go back to Earth and get as many treasure as they can find, in order to sell it and make some money.
The writing is not a serious as the first one, however it's not trying to be, so I don't think that's a bad thing. And even if it's not as emotional, the writing in this game is still really good and funny. Gone are the days where Olimar talks about how much he misses his family between levels, and now you get jokes talking about the president and how much money he owes, or the spam emails that Olimar receives. Plus, if you want to read something more serious, just take a look at the brand new Piklopedia and you're set!

As I said before, Pikmin 2 has waaay too many ideas, and the developers try their best to implement them. The most important one is double captains, as you can now swap between Louie and Olimar with the click of a button. In theory, I love this, as it allows you to multitask more effectively and split up tasks to be more efficient. But in practice, the game doesn't give you many opportunities to make the most out of this mechanic. It's an amazing tool for Dandori, but it wouldn't be until later entries where we can see how good multiple captains can be. So for now, it's just alright.
As the goal of the game is now to repay your company's debt, you'll no longer be looking for ship parts but rather for Treasure. Scouting the overworld looking for real world items is an amazing idea and a great replacement for the ship parts, and the fact that it's come back in every sequel proves it.
So how did they fuck this up?

Pikmin 2 essentially takes the first game, and just sticks all of its own ideas on top of it. This sounds like it should be a good idea at first, but in the end the game's just a convoluted mess of ideas that do not fit together, that slowly turns into a boring grind as you approach the final boss. And the one culprit? Caves.
Pikmin 2 introduces randomly-generated dungeons to the franchise, where you can find more treasures and repay your debt faster. Once you enter a Cave, you cannot get new pikmin, time completely stops outside, and it's just a race to the finish while trying to retreive as much treasure as possible. And it sucks. There's no more strategy involved, no managing of any kind happens inside, it's all just a big combat test that goes on for way too long. It asks you to play an entirely different game, but refuses to adjust the gameplay to make up for it.
The point of the caves is to "explore" and get new treasure, but there's nothing to explore. Not only are most of the themes really generic and boring, especially when compared to how good the new overworld feels, but all caves are also randomly generated, so they blend together even more. All it amounts to is hours of the player running around repetitive hallways, waiting for the treasure radar to go off.
And the worst part of it all? Almost 90% of treasures are found inside caves. Caves are the game's entire identity, and aside from one or two special cases, they're all terrible.

The game also introduces Purple and White pikmin, two new types with entirely unique mechanics and designs. And of course they're directly tied to the caves, why wouldn't they be? There's no way to get the new pikmin other than going into a cave, finding a candypop, and bringing your new pikmin out. So if you want to play around with your new toys you better be prepared to grind!
The balance of this game is just horrible too. There's so many new enemies that one-shot your pikmin, enemies that stun you while everyone else dies, and more instakill hazards than ever before. Gee, that sure sounds like fun! Especially when you cannot get new pikmin while playing through the main gimmick of the game! But don't worry, turns out you also have access to a few unbalanced tricks of your own, like bitter spray and purple pikmin, that make the game entirely trivial! That's kinda like balancing the game, right?????

I simply couldn't do it. I got all treasures in every other game, but Pikmin 2 was the one that broke me. I managed to get the final boss, but it also had as much thought put into it as the rest of the game. It's attacks either do nothing but waste your time, or wipe out half your squad with no warning, no in-between.
IN CONCLUSION: This is bad. Pikmin 1 was a game with an incredible amount of thought put into it, where all the mechanics were expertly designed and flowed into each other. Pikmin 2 is a game that takes the original formula, entirely changes how it's played for no good reason, and then just makes it the player's problem. There's good parts to this game, sure, but they're all ignored in favor of the cave system, and you don't get a chance to explore what's really fun. All you're left with is a non-cohesive mess that does not work.
And the worst part? It's that it's 2024, and Pikmin 4 is out now. It's a complete redemption of Pikmin 2, where the developers tried each and every one of these ideas again, and where all these issues have been fixed by actually putting some thought into the way the game functions. I just finished playing through it and I absolutely loved it. It showed me how bad this game really is, and I don't think I'll be touching it again anytime soon 4/10