While there's definitely a valid debate to be had over Pikmin 1's static time limit and Pikmin 2's more relaxed approach, I personally prefer the time limit. It adds that extra weight and importance to your actions on a given day. Yeah, once you're familiar with the game you'll never really be at risk of running out of time ever again, but it's still an effective element and adds the fun layer of seeing how few days you need to escape. I'm still not entirely sure whether I prefer 1 or 2, but the added intensity to survival and the more focused design of each level are definitely points in favor for 1. Just an all around excellent and fun strategy game.