Xsummer
by Aureliquis
From the letters page: Xsummer comes from Aureliquis and is built in Ren'Py. It is a visual novel built around parody and MILF, starring a male protagonist. Development is ongoing; the current version is 0.0.5. Available for Windows, Mac, Linux and Android, and playable in the browser on Xgame9, around 422 MB.
From the box: “Xsummer throws you into a sizzling summer where wild inventions fuel forbidden fun. This NSFW Ren'Py visual novel mixes cheeky humor with steamy escapades, kicking off with a story that’s equal parts naughty and irresistible.”
Screens
6 screenshots from the game's own gallery.