Just as an update, for those who might wonder or who even care...
I've now expanded my original story (at least I have an outline). The main players will still be the mom and her twin sons but I've also added to the main cast a fraternal twin sister (the sons' aunt), and a niece (the sister's daughter / the sons' cousin).
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The twins' teacher and her daughter will show up from time to time but as of right now, they will not be main characters.
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There will now be multiple paths based on choices made. The player will have more control over the story, based on love, guilt, persuasion, or even coercion. The goal is to offer something fairly vanilla to 'damn, he went there?'
Note: This is going to be a porn game where monogamy rarely exists. Lots of people having lots of sex with lots of other people. And also, as a heads' up, characters in game will have to deal with emotions from time to time throughout the game. I'm not trying to offend anyone. It's just what it's going to be.
On a technical level:
I made a program (a work in progress) that allows me to storyboard renders along with dialog that automatically generates renpy code. Hopefully, the extra time I spent up front will decrease the time between updates in the future.
While I don't have any plans to redo what I've already done (at this time), future updates will have much more efficient code, which should also decrease the time between updates in the future. That also should improve over time.
I will always make time to play around with Daz and also now, Photoshop. I started at ground zero with both. I have gotten the basics down for doing animations and, as with renders in general, see those only improving with time.
As I said already, I don't have any plans as of now to redo what I've already done, but the goal is to improve on each update.