In The Sims 4, by default, two female Sims cannot biologically conceive a child together. The game mechanics do not allow for same-sex couples to naturally have children together through pregnancy.
However, there are alternative methods for same-sex couples to have children in The Sims 4:
Adoption: Same-sex couples can adopt a child through the in-game adoption service. This allows them to expand their family and raise a child together.
Use of Mods or Custom Content: The Sims 4 has a vibrant modding community that creates custom content, including mods that enable same-sex couples to have biological children. These mods introduce new gameplay elements, such as artificial insemination or other reproductive options, which allow same-sex couples to conceive and have children in the game.
It's important to note that using mods or custom content may require additional installation steps and could impact the stability or functioning of the game. Always ensure that you download mods from trusted sources and follow the installation instructions carefully.
While the base game does not provide a direct option for same-sex couples to conceive, the inclusion of mods or custom content can offer alternative ways for them to have children and build their families in The Sims 4.