Conception & Odds¶

18+ content

Part of the Pregnancy & Breeding system. For pregnancy progression, see Twins, Birth & Breeder.

See the build availability note. This guide follows the v16.2 release and August 14, 2026 hotfix.

Reading the odds¶

The Impregnation Wheel displays the current chance. Factors include fertility, position, buildup, items and Breeder perks. The Fertility app offers a seven-day forecast.

Use the panel's final percentage for your installed build. Do not assume that every displayed bonus is a multiplier, or that a calculation from another version applies unchanged.

Consumables¶

The v16.2 release notes describe Preggo Booster as an additive bonus, rather than a ×1.5 multiplier, and Sperm Stoppers as blocking conception while active. Check Inventory & Items for their documented effects and duration; use the displayed odds if your build differs.

For example, a flat 50-percentage-point bonus and a 50% relative increase are different operations: applied alone to 20%, they would produce 70% and 30%, respectively. The game's final result can still depend on other modifiers and restrictions.

Buildup¶

The August 14 v16.2 hotfix corrected the buildup bonus, which can reach +75%.

Check the current status and wheel breakdown instead of relying on a fixed abstinence multiplier table from an earlier build.

Contraception and route state¶

Janice's IUD-related conversations change her pregnancy options. Pull-out availability depends on the scene.

Check the displayed odds and active item status before an encounter if you want to prevent conception. A missing menu option may also depend on story progress; consult the character's walkthrough and the phone's Guide.