Seeking Game with real low Pregnancy chance

[Freakotello]

Hello, I'm looking for a game where pregnancy is a gameplay mechanic, but the probability of it is kept realistically low, so that not every sexual encounter automatically leads to pregnancy. I don't mind whether it's a male or female MC.

 

[Advent Games]

My game features realistically modelled pregnancy chances that go up and down with the L.I.'s, likewise realistically modelled menstrual cycle. Factors influence it, but a ballpark estimate is ~30% if she's ovulating (48 hours window give or take), 5% before and after and almost 0% for the rest of the month. Your semen is also more potent on the first day and suffers attrition before dying after ~48 hours inside of her.

 

[seifukulover]

Degrees of Lewdity has a 'realistic' setting for pregnancy
There was this HTML game called Inseminator that was all about impregnating girls, but I don't remember the mechanics of it exactly.

 

[Freakotello]

My game features realistically modelled pregnancy chances that go up and down with the L.I.'s, likewise realistically modelled menstrual cycle. Factors influence it, but a ballpark estimate is ~30% if she's ovulating (48 hours window give or take), 5% before and after and almost 0% for the rest of the month. Your semen is also more potent on the first day and suffers attrition before dying after ~48 hours inside of her.

Hello, I've checked out your game and I'm really impressed. I find the many options and the information provided fantastic. It reminds me of another game with rather weak graphics. Unfortunately, your game lacks the option for sex while sleeping, which would fit the game concept perfectly. However, I will keep an eye on future updates, as I like the planned endless mode and I'm hoping for more fetishes like sleep sex, netorare (other men/boys flirting with her while she's at school, etc.).

 

[Qahlz]

Lab Rats 2 - Reformulate: Has girls with a fertility cycle, where the chance to impregnate changes depending on how far away from their peak day it is. Also includes a mechanic to alter fertility.

EraTohoK: Fertility cycle. Don't know the chances, but IIRC it's pretty much impossible to get girls pregnant outside of the ovulation period, and not guaranteed during it, either.
Also in that thread you can find EraTohoTW, where pregnancy chances for most characters, especially non-humans, are practically abysmal.

Hentai High School+: Fertility cycle. No guaranteed pregnancy, although if you creampie a woman during peak fertility the chance is pretty high.

The Fixer: Fertility cycle. Bonus: Even cumshots on the outside of the vagina can impregnate with a super-low chance.

Porn Empire: Not sure if there's a fertility cycle or just really low pregnancy chance. You also only know that your models are pregnant several months in.

 

[Silverdragon]

Peasant Quest

While you can boost fertility temporarily, pregnancy is not guarantied (though it is often required to progress the game)