Zombie Master is a multiplayer Source modification, centred around a zombie-apocalypse, which throws all but one player in the shoes of human survivors. Pitched against a relentless tide of rotting flesh, they must scavenge for weaponry and equipment just to stay alive. But that one player, chosen randomly at the beginning of the round, is not bound by mortal restraints. To speak his name is to invite the wrath of hell - but most call him the 'Zombie Master'. He is nigh omnipotent. His invisible hand controls the legions of undead like puppets on strings; slowly closing the net on the humans while they run to and fro like rats in a maze.
In an attempt to escape the growing hordes found in the cities, you and several other survivors fled to the country, in hopes of finding some place that they hadn't found yet. Some place you could call home. Upon arriving at a deserted farm house, you thought you had finally found a safe place to stay. All these thoughts vanished when the gate closed and locked itself behind you. Now your only hope to escape is to fly away with the biplane in the barn. All you need to do is find a wheel, and propeller before you can be on your way... or so you thought.
The survivors start at the entrance to the farm, and have to find a tire and propeller for the biplane. The tire is in the playground behind the house, and is currently in use as a swing. Once it is pushed/grabbed it falls off, and can be taken to the biplane. The propeller is in the shed behind the barn, and is relatively simple to retrieve. Unfortunately, the battery on the plane has died, and must be taken to the recharging station conveniently placed behind the house. The survivors place the battery in the charger only to find that the power has been cut. Someone has to go into the crawlspace in the upper floor of the house and plug in the power cord. The battery then takes 2 minutes to charge. Plugging in the power cord also turns on all the lights in the house. The charging station sparks while the battery is charging, so if you aren't sure if it's done yet look for sparks. Once the battery is done charging, the survivors have to take it back to the biplane and wait 3 minutes for it to start up. If the survivors manage to survive for those 3 minutes, they win.
When playing as the zombie master you have 5 primary spawn points around the edges of the map, although the one by the gate doesn't become active for 30 seconds after the round starts, so the survivors can get away from it first. You also have access to extra spawns in most of the rooms of the house, but these are deactivated whenever there is a survivor in the room. You also have access to numerous traps outside and in the barn, as well as the ability to destroy any door in the house for 10 res. To win you can either kill the survivors, or destroy the biplane. The biplane has 1000 health, so destroying it will be difficult unless the survivors leave it undefended.