Zombie Panic: Source has three gamemodes. Each game mode plays differently, requiring different strategies if a team hopes to win. Maps are divided into three categories, one for each gamemode: Survival, Objective, and Hardcore. From update 2.0 to update 3.0, there was a fourth gamemode, ZPA, with its own unique maps.
ZPS (Zombie Panic Survival)
- In Survival mode, survivors must deplete all zombie lives and kill all zombies, or survive until the time limit, in order to win the round. Zombies must kill all survivors before the time limit is reached in order to win the round. Maps with the ZPS prefix are played on Survival mode.
ZPO (Zombie Panic Objective)
- In Objective mode, survivors must complete a set of objectives in order to win the round. Zombies must kill all survivors before the objectives are completed in order to win the round. Maps with the ZPO prefix are played on Objective mode.
ZPH (Zombie Panic Hardcore)
- In Hardcore mode, zombies are significantly stronger, and multiple Carriers may spawn at the beginning of each round. Maps with the ZPH prefix are played exclusively on Hardcore mode and may consist of a mix of ZPS and ZPO style gameplay. Maps with the ZPS and ZPO prefixes may be played in Hardcore mode, in which case the win conditions are the same as those of the original map.
Removed Gamemodes Edit
ZPA (Zebra Panda Alliance)
- In ZPA mode, Survivors and Zombies would compete to control areas and complete objectives. Unlike the other gamemodes, Survivors would respawn after being killed. Maps with the ZPA prefix were played exclusively on ZPA mode.