Game modes (Survivors)
There are currently 5 Game Mode options for each map in Yet Another Zombie Survivors. Initially, only Default Mode is available and the others must be unlocked through achievements, usually by surviving the previous mode on that map.
Default
This is the standard game mode. Players must survive 20 minutes, after which dawn arrives and all zombies die. Technically this mode lasts for 20 minutes and 10 seconds, though it becomes impossible to die after the 20 minute mark.
The danger level will gradually increase over time, up to level 6, with zombie stats and spawn rate increasing with each level.
Endless
Similar to default, but there is no time limit and the game lasts until the player dies. To complete this mode, player must survive for at least 20 minutes. Danger level increases faster and infinitely (with an effective stat cap at around level 136), though individual danger levels increase have smaller zombie stat increases.
Hardcore
A harder version of the default mode, but lasting only 10 minutes.
Boss Rush
Similar to Hardcore Mode, but with increased spawn of boss enemies and without a time limit. This mode lasts 10 minutes.
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ㅤThis mode was added in Early Access version 0.4.0.
One Hit
The player dies in a single hit and must survive for 5 minutes, but there's no time limit. Any items or upgrades increasing health, health regeneration, or armor are effectively useless in this mode.
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ㅤThis mode was added in Early Access version 0.4.0.