Zombie Defense is a real-time strategy game where players control several survivors of a zombie apocalypse who must now work together to survive the onslaught of endless hordes of the undead.
Gameplay is quite simple: you must place your characters in key places around the scene so they can then defend their position against the attacks of several waves of zombies. Your characters shoot automatically, so your job is limited to picking the best places for them to defend.
As you complete the missions (there are 33 in total) you can purchase upgrades for your group of survivors. You'll have over a dozen different recruits at your disposal and you can equip them with all sorts of weapons: pistols, shotguns, machine guns, even bombs.
On each one of the campaign's levels you'll see the faces of several different zombies and monsters, including the occasional gigantic space enemy that you'll have to defeat using aerial attacks and other kinds of weaponry.
Zombie Defense is a strategy game with a streak of action mixed in; you'll definitely have to be very fast at making decisions. Choosing the right spots for your survivors to defend will prove key to victory.