I played a game a few months back that seemed to be off to a really good start but I can't remember the name of it.
- Male MC
- Mother and Sister were main love interests
- Mother was initially opposed to romance with MC or between Sister and MC but started to come around
- MC was constantly getting erections which initially offended Mom & Sis
- Post apocalyptic setting
- Game primarily took place inside of some large abandoned building with occasional forays into the "outside" to gather materials.
- Zombies or similar attacked sister and MC at one point
- MC met another girl on a foray and can give her a knife, also help her after injury?
- Engine is likely Ren'Py or possibly Unity. Almost certainly not RPGM