ARK breeding is a chain of timers rather than one speed setting. Mating cooldown determines how often the parents can breed, incubation or gestation determines when the baby appears, maturation determines when it becomes adult, and imprint settings determine how often care is requested. Increasing only maturation can create a baby that grows up before the player has enough opportunities to reach 100% imprint.
There is no universal perfect breeding configuration. Test the shortest-maturing and longest-maturing species used on your server before publishing a rate set.
Where the breeding settings belong
Breeding multipliers belong in Game.ini under the game-mode heading shown below. Stop the server before editing and retain a copy of the previous file. On Windows dedicated servers the file is normally below ShooterGame\Saved\Config\WindowsServer\; on Linux use the corresponding LinuxServer directory. Hosting panels may present the same values as form controls.
[/script/shootergame.shootergamemode] MatingIntervalMultiplier=0.250000 EggHatchSpeedMultiplier=10.000000 BabyMatureSpeedMultiplier=10.000000 BabyCuddleIntervalMultiplier=0.100000 BabyImprintAmountMultiplier=1.000000
The ARK server configuration reference lists these variables and their defaults. Avoid duplicate headings or multiple copies of the same setting because a hosting panel or later edit may make the effective value difficult to identify.
MatingIntervalMultiplier: lower is faster
MatingIntervalMultiplier multiplies the cooldown before a female can mate again. This setting works in the opposite direction from most speed multipliers: 0.5 produces roughly half the default interval, while 0.25 produces roughly one quarter. It does not make the mating progress bar itself complete four times faster; it reduces the post-mating wait.
For a small PvE group, 0.25 is a reasonable starting point because it allows repeated breeding without turning every female into a constant production line. Seasonal servers may go lower. Public servers should consider the effect on creature counts and storage before making the interval nearly zero.
EggHatchSpeedMultiplier: incubation and gestation
EggHatchSpeedMultiplier raises the speed of egg incubation and mammal gestation. A value of 10 aims for one tenth of the normal duration. The visible result can vary by species because their original timers differ. This setting changes the wait before birth or hatch, not how quickly the baby matures afterward.
Test both an egg layer and a gestating creature. Make sure players still have enough time to notice that a birth is approaching, prepare food and claim the baby. Extremely fast hatch rates can turn a missed notification or brief disconnect into a lost breeding attempt.
BabyMatureSpeedMultiplier: higher is faster
BabyMatureSpeedMultiplier divides the time required to reach adulthood. At 10, a maturation that normally takes ten hours is approximately one hour, before considering other server systems. This setting has wide consequences: faster babies consume food for less real time, breeding lines advance sooner, and more creatures may be raised during one play session.
The value also interacts with cloning time and imprint calculations. Raising it should therefore trigger a review of cuddle interval rather than being treated as an isolated convenience setting. If bUseSingleplayerSettings=True, ARK applies an additional maturation multiplier; the configuration reference documents a 35x additional multiplier for the default single-player settings behavior. Do not enable it unknowingly on top of a custom breeding profile.
BabyCuddleIntervalMultiplier: lower requests care sooner
The default care interval for non-modded creatures is eight hours at BabyCuddleIntervalMultiplier=1.0. Lower values request care more frequently: 0.5 targets about four hours and 0.1 targets about 48 minutes, before other relevant behavior. The official imprinting guide explains that the amount awarded per interaction depends on total maturation time, maturation speed, cuddle interval and imprint amount.
The safest rule is to make the first possible care request occur comfortably before the fastest relevant creature matures. Then verify that the number and spacing of interactions are practical for a human schedule. A mathematically possible imprint can still be poor design if it requires players to return every few minutes through the night.
BabyImprintAmountMultiplier: use carefully
BabyImprintAmountMultiplier scales how much imprint percentage a successful care interaction grants. It can rescue a schedule where players have time for fewer interactions, but it should not be the first setting used to hide an impossible cuddle interval. First make care opportunities occur at sensible times; then increase imprint amount when your intended experience requires fewer successful interactions.
Imprinting is a bonus rather than a requirement for a creature to survive. The bonus is not inherited by offspring, so server owners can make imprinting more accessible without changing the inherited stat line itself. Nevertheless, large values affect rider performance and creature durability, so publish them as part of the server’s rates.
Three starting profiles
Private group: faster but recognizable
MatingIntervalMultiplier=0.250000 EggHatchSpeedMultiplier=10.000000 BabyMatureSpeedMultiplier=10.000000 BabyCuddleIntervalMultiplier=0.100000 BabyImprintAmountMultiplier=1.000000
This is suitable as a test profile for friends who play evenings. It is not guaranteed to give every species 100% imprint without further adjustment.
Weekend event: temporary acceleration
MatingIntervalMultiplier=0.100000 EggHatchSpeedMultiplier=20.000000 BabyMatureSpeedMultiplier=20.000000 BabyCuddleIntervalMultiplier=0.050000 BabyImprintAmountMultiplier=2.000000
Use a profile like this only after testing and announce the exact start and end time. Returning rates while babies are in progress can confuse player schedules.
Long-term community: lower operational pressure
MatingIntervalMultiplier=0.500000 EggHatchSpeedMultiplier=5.000000 BabyMatureSpeedMultiplier=5.000000 BabyCuddleIntervalMultiplier=0.200000 BabyImprintAmountMultiplier=1.000000
Slower output helps preserve progression and reduces the rate at which large breeding operations expand.
A reliable test procedure
- Back up the configuration and test on a non-production copy when possible.
- Select one fast-maturing species and one slow-maturing species that players actually use.
- Record mating cooldown, incubation or gestation, total maturation and the first care request.
- Confirm the first care request occurs before adulthood for both species.
- Complete an entire maturation and record the achievable imprint percentage.
- Restart the server once and confirm the same values remain in the files.
- Publish the tested rate table and the date it was verified.
Troubleshooting common failures
If babies mature before requesting care, lower BabyCuddleIntervalMultiplier or reduce maturation speed. If care happens often but gives too little percentage, review the full schedule and then consider imprint amount. If values appear much faster than configured, check bUseSingleplayerSettings. If nothing changes, verify that the lines are in Game.ini under the correct heading and that the hosting panel did not overwrite them.
Use the Server Settings Generator to produce a clean block, but treat its output as a configuration draft. The final proof is a complete in-game breeding test on your own server version and mod set.