More fetuses at once the better for me. As far as a gameplay mechanic Haremase Simulator has the right idea, it's setting is "woman to man ratio 20:1 for reasons" so the MC gets paid by the government to get women pregnant. Having a reason why the MC gets money for making babies is probably the easiest way to have a pregnancy focused game. Seeds of Destiny has the characters pregnant with giant seeds so they can appear pregnant without dealing with babies. I suppose a really corruption focused game could do something with abortions or infanticide, that wouldn't be for me though.
It needs to be like midgame at the latest and flushed out by the ending for sure. everyone knows where it's headed at by that point. the pay off is just better.
Could definitely do without pregnant sex, but impregnation (in any context) is incredibly hot, and its nice to at least see the final product in an epilogue or whatever. It's very disappointing when a game is tagged with pregnancy, and it's just a character saying they got pregnant and it's left at that lmao.
Pregnancy is amazing, but too many games just do it at the end. It's way better when it's done along the game, as something that you see as a result of your choices (it's more fun if spamming the creampie option actually matters ). Pregnancy sex is also hot, but i can take it or leave it.
Its not my thing im sorry, its just becouse i cant stop thinking about the baby could get hurt for some reason and turns me off. Besides that i think a pregnant woman looks beautifull.