Home Defense - Zombie Siege is a base-defense game similar to Plants vs. Zombies with tower and merge elements. The player helps a dragon-riding magic user defend her home against wave after wave of zombies and boss villains while she's away with the help of various types of Normal and Elite monsters that have animal and plant characteristics.
The home features a blue energy barrier between two turrets. Rows of grass-covered squares serve as the front line of the defense and the main position for Normal monsters. A row of stone squares behind the line allows the Elite monsters to serve as both heavy hitters and the last line of defense.
The player uses magic eggs to call monsters. They then merge two matching ones to create more powerful new types. These monsters include anthropomorphic fruits and vegetables, and even trees. At different times during the game, the player receives a special egg that hatches an Elite monster. All monsters shoot special abilities at the zombies. The turrets also collect abilities and shoot them in a supercharged rapid-fire capacity.
Home Defense - Zombie Siege features a lot of monsters and fighting options. The player can use a potion icon near the bottom-left corner to speed up their monsters' attacks to earn more coins. They can also improve their monster team via coins and gems awarded during play and flying eggs, basic and super loot boxes, quest achievements, and ads. The player can also search for and tame monsters using a round icon near the upper-right corner.