Futakin Expansion

Futakin Expansion is a minimalist clicker game featuring inflation and futanari transformation mechanics. Players click to progress the main character's physical changes, with a focus on genital growth. The game includes a "Birth" reset mechanic that grants permanent progression boosts—either increased auto-clicker bonuses (Assimilate) or improved upgrade effectiveness (Consecrate). It is a spin-off in a series that includes Abdomen Expansion and Breast Expansion, sharing similar fetish-focused gameplay systems.