True story from work today:
Kid comes in and goes to the Kindle Fire tablet display. He pulls up the demo games and starts playing Plants vs Zombies. Having recently repurchased the game, I went over and watched him play to see what he'd do. By the time I get there, he has chosen his 8 plants and started playing.
I immediately noticed that he has no Sunflowers and is only collecting falling sun. I half-ashamedly broke into this speech:
"Kid, you really need to start over. You've got no Sunflowers. They provide sun, which is the backbone of your economy! You need to spend the early game planting two rows of them in a tight top to bottom formation. You can survive early Zombie rushes by using Potato Mines. The recharge on them is such that you can hold off 3 Zombies and have your economy in high gear for the midgame."
"Once the sun is rolling in, you can drop your more powerful, higher-tech plants onto the field. I'd recommend a single Snow Pea in every lane to take advantage of the slow effect. After that, get your offensive plants in place and wall up your front with Pumpkins, Wall-Nuts, or Tall-Nuts. With an adequate offense and defense created, start saving up sun for your endgame plants such as Melon-Pult and Gatling Pea."
The kid stared at me with clouded over eyes. He said, "I don't need to do that, I'm going to use this Mushroom to mind control the Zombies!"
I retorted, "But you didn't bring the Coffee Bean. Your Mushrooms will sleep during the day and be useless!"
A customer came to the register so I had to leave. As I left I said, "I'd start over and work on your build order kid!"
Spoiler:Twin-Sunflowers is like dropping Mules. So OP!