Today, Plants vs. Zombies 2: It’s About Time (Free), is celebrating by giving away stuff to its players. More specifically, Plants vs. Zombies, one of iOS’ oldest and most popular franchises, is celebrating its 6th birthday. When Plants vs. Zombies hit the App store in 2009, it was one of the earliest tower defense iOS games, and it quickly found its way on many iPhones and iPads around the world. Just in the first nine days, the original Plants vs. Zombies sold more than 300,000 copies on iOS, making it the fastest-selling PopCap video game. This franchise gradually shambled its way on all kinds of platforms and then was followed by a sequel, Plants vs. Zombies 2: It’s About Time, in 2013. Just to understand the franchise’s reach, according to EA, Plants Vs. Zombies 2 has been downloaded more than 100 million times since its debut on iOS and still sees an average 9.5 million unique game sessions started each day.

To celebrate Cinco de Mayo and the franchise’s birthday, EA Mobile is featuring a “10 Day Birthdayz" event in Plants vs. Zombies 2 that will offer plenty of collectibles and gems. Players will be able to work to unlock guaranteed gems with every win as well as get five limited time collectible costumes for their plants: Kernel-pult’s blowout, cupcakes for Snapdragon’s head, bow ties for Bonk Choy, and party hats for Cabbage-pult and Lightning Reed. All players will also receive a free World key as part of the birthday celebration. If you’re still enjoying killing zombies, go celebrate and harvest those rewards.