The other half of Khaine's mod tweaked to work with 2.1 (the zombie and animal counts)
Inserted into the first tab. (thanks Khaine) with adjusted cell_height values as well.
<set xpath="/windows/window[@name='newContinueGame']/rect[@name='rightPanel']/rect[@name='tabs']/rect[@name='tabsContents']/rect[@tab_key='xuiGameSettingsGeneral']">
<!--<rect tab_key="xuiGameSettingsGeneral">-->
<grid pos="6,-40" rows="14" cell_width="525" cell_height="42" repeat_content="false" arrangement="vertical" >
<gameoption name="ServerEnabled" title="goServerEnabled" value_wrap="false" value_type="bool" values="" display_names="goServerEnabledOff,goServerEnabledOn" value_localization_prefix="" />
<gameoption name="Region" title="goRegion" value_wrap="true" value_type="string" values="NorthAmericaEast,NorthAmericaWest,CentralAmerica,SouthAmerica,Europe,Russia,Asia,MiddleEast,Africa,Oceania" display_names="" value_localization_prefix="goRegionName" has_default="false" always_show="true" />
<gameoption name="ServerVisibility" title="goServerVisibility" value_wrap="false" value_type="int" values="" display_names="goServerVisibility0,goServerVisibility1,goServerVisibility2" value_localization_prefix="" />
<gameoption name="ServerEACPeerToPeer" title="goEacEnabled" value_wrap="false" value_type="bool" values="" display_names="" value_localization_prefix="" has_default="true" enabled="{servereacpeertopeer}"/>
<gameoption name="ServerAllowCrossplay" title="goServerAllowCrossplay" value_wrap="false" value_type="bool" values="" display_names="" value_localization_prefix="" tooltip_key="{crossplayTooltip}"/>
<gameoption name="ServerPassword" title="goPassword" value_wrap="false" value_type="string" values="" display_names="" value_localization_prefix="" is_textinput="true" password_field="true" character_limit="30" />
<!--ServerMaxPlayerCount gameoptions, some are for console platforms.-->
<gameoption name="ServerMaxPlayerCount" title="goMaxPlayers" value_wrap="false" value_type="int" values="2, 4, 8, 16" display_names="" value_localization_prefix="goPlayer" platform="!PS5,!XBOX_S,!XBOX_X"/>
<gameoption name="ServerMaxPlayerCount" title="goMaxPlayers" value_wrap="false" value_type="int" values="2, 3, 4" values_enforced="true" display_names="" value_localization_prefix="goPlayer" platform="PS5,XBOX_X"/>
<gameoption name="ServerMaxPlayerCount" title="goMaxPlayers" value_wrap="false" value_type="int" values="2" values_enforced="true" display_names="" value_localization_prefix="goPlayer" platform="XBOX_S"/>
<gameoption name="GameDifficulty" title="goDifficulty" value_wrap="false" value_type="int" values="" display_names="goDifficulty1,goDifficulty2,goDifficulty3,goDifficulty4,goDifficulty5,goDifficulty6" value_localization_prefix="" />
<gameoption name="PersistentPlayerProfiles" title="goPersistentCharacters" value_wrap="false" value_type="bool" values="" display_names="" value_localization_prefix="" />
<gameoption name="XPMultiplier" title="goXPMultiplier" value_wrap="false" value_type="int" values="25, 50, 75, 100, 125, 150, 175, 200, 300" display_names="" value_localization_prefix="goXPMultiplierValue" />
<gameoption name="DayNightLength" title="goDayLength" value_wrap="false" value_type="int" values="10, 20, 30, 40, 50, 60, 90, 120" display_names="" value_localization_prefix="goMinute" />
<gameoption name="DayLightLength" title="goDayLightLength" value_wrap="false" value_type="int" values="12, 14, 16, 18" display_names="" value_localization_prefix="goDayLightLengthValue" />
<!--khaines code-->
<!--this is just uncommenting from the game code and adding some values, 64 zombies and 50 animals show as default when the 'Defaults' setting is used in the New Game Options-->
<gameoption name="MaxSpawnedZombies" title="goMaxSpawnedZombies" value_wrap="false" value_type="int" values="30, 50, 64, 75, 85, 100" display_names="" value_localization_prefix="" />
<gameoption name="MaxSpawnedAnimals" title="goMaxSpawnedAnimals" value_wrap="false" value_type="int" values="15, 30, 50, 65, 75, 85, 100" display_names="" value_localization_prefix="" />
<!--end khaines code-->
</grid>
</set>
cheers