Plants vs. Zombies 2 is a massive expansion of the original tower defense formula, offering hundreds of plants and dozens of worlds to explore. For many players, the ultimate goal is to achieve a complete collection of plants at their maximum levels to tackle the most difficult challenges the game has to offer.

Seed-ium Plants: These are unlocked by participating in seasonal events and collecting specific amounts of seed packets.

Mint Plants: These powerful "Power Mints" are purchased using Mint currency earned specifically in the Arena mode.

Understanding Plant ProgressionIn Plants vs. Zombies 2, plants are improved through the leveling system. Collecting Seed Packets allows players to increase a plant's stats, such as reducing its sun cost, increasing its damage, or toughening its resistance to zombie attacks. Reaching the "Max Level" for a plant often culminates in "Mastery" levels, which provide even greater boosts for end-game content like the Arena and Penny’s Pursuit.