Got a green thumb? You must be a gifted gardener! Or maybe you were bitten by a zombie. Either is perfectly plausible in Plants vs. Zombies.

In this tower-defense classic, you’re a humble homeowner determined to thwart an encroaching zombie horde by strategically placing plants of varying offensive and defensive capabilities around the yard. Clever, slick, and hilarious, it has been a crowd-pleaser since ambling onto the App Store in 2013.

Thanks to a consistent crop of updates, it’s also managed to stay as fresh as a daisy. Here’s why we keep tending to it.

You have to hand it to the undead: They sure are persistent. Knock ’em down and they keep on coming—and in Plants vs. Zombies, that means more modes than you can shake a (disembodied) fist at.

The game is blooming with all kinds of varietals: Adventure mode, puzzles, a Zen Garden, and loads of mini-games, including postlaunch arrivals like Wall-nut Bowling and Vase Breaking.

There’s nothing wrong with your garden-variety Peashooters, Potato Mines, and Chompers, but the game’s herbaceous arsenal has expanded a bit. For instance, you can now detonate zombies in 3x3 bunches using Explode-o-nuts. Efficient, elegant, and nutritionally dense!

Looks matter—even to corpses. A revamped interface makes it easier than ever to explore this huge game. Whether you want to take on Snorkel Zombies in the Zombiquarium or replay a favorite level, it’s just a tap away.