Board Thread:Plants vs. Zombies 2: It's About Time/@comment-25928375-20150430085936/@comment-24275721-20150501085327

Btw, can someone explain to me what this quests thing is actually for?

Adrianne said that they give you points and from the previous screenshots it obviously has a Global Leaderboard. So what is it for anyway? Also, she said the log will help you unlock plants; how does that work?