Pokemon Lewd Virus

From the letters page: Built in RPG Maker, Pokemon Lewd Virus by PurpurDawn is an RPG that is ongoing. Expect fantasy, futa/trans protagonist and monster girl with 2D art. The current build is 0.5.6 (330 MB). Available for Windows.

From the box: “A face forward pokemon adventure on an original region where where by pure coincidence a lot of female characters from the main saga decided to move.”