The House Guest - Version 0.5 by Martina Plex

You are playing Tim, an aspiring Golf Pro, who managed to get a place in a Leading Golf Academy.
Luckily Tim can stay at the family of his mother’s former best friend. Making the right decisions you will slowly turn their teenage daughter Tanja into a sex addict, seduce her sexually frustrated mother Jill, and have multiple erotic encounters with other girls and MILFs.