Welcome to Plants vs. Zombies Answers. What would you like to know?

You just play it normally, like the first one...however, after you beat adventure mode the first time and then start playing it a second time, then during the second time you're going through it you don't get to choose the first three flowers, the game chooses your first 3 for you, you get to choose the rest of them. So it's harder because some levels the game chooses crappy flowers for you so you're limited. Also, the Zombie Yeti can be found on 4-10.

Ummm, did you say 'moe'?