The Spellbook, an adult game developed by NaughtyGames. Released December 4, 2018. Download for PC Windows, Mac, or Linux. No voice acting.
Your landlady is a hottie with a fantastic body! You find a spellbook and cast a spell on her. Her personality changes completely! Now you have to decide whether to take her for a spin, or let other men have her!
Source: N4G PC [NSFW] Game Review: The Spellbook – Hentai Reviews