Max's Big Bust is currently on sale for the Steam Summer Sale!
https://store.steampowered.com/app/4..._Nekorai_Tale/
Our newest RPG Alluna and Brie is also on sale, and while that game is about magical girls, there are TG transformations and multiple gender bent characters, one of which plays a massive role in the plot. I don't want to spoil it as it's a gender bender mechanism we haven't really used before, but if you enjoyed Max you'll definitely like Alluna and Brie.
https://store.steampowered.com/app/1...luna_and_Brie/