I emulated the first two games on Dolphin in 2020 (although I've actually finished only the first game which took me somewhere around 10 hours iirc) and my playtime in Pikmin 3 last year reached 25 hours for completing the main campaign on Normal difficulty + Olimar's levels + gathering/slaying missions (I often tried to get the gold medal on those). Most of my pikmin deaths in the main campaign were from the final boss.
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Pikmin 3 is more geared around micro-management since you get to control up to three crew members with several situations that require cooperation between two or three separate groups of pikmin at once as well as to manage your time efficiently. It's even more important so in higher difficulties which lower the amount of the time you can navigate around the zone level before the sun fall, or the mission levels for the highest score. The game allows a second player for split coop btw.
Pikmin 1 was more time-focused as you (as the sole playable character Captain Olimar) had to gather all the thirty pieces of the wrecked ship within 30 days before your reserve of air went out. Pikmin 2 threw away the concept of time limit as the main objective was to clear off the debt of your boss through "unknown" items you've gathered in the wild. It was also more about underground dungeon exploration to obtain more valuable items although you had to face many kind of traps and sometimes a boss
fuck the slime roller
And to answer your question directly, I believe Pikmin 3 DE is worth the money, you might get it for a bit less as a physical cartridge depending of the retailer or second-hand.
The Pikmin themselves are cute too.
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