Looks promising. Best of luck with this project!
If you don't mind a little bit of feedback, it would be nice if the sprite for her bigger breasts was 'fuller' breasts and not just 'longer'.
Yup! In Act 1, you’ll encounter a humanoid native species (though not immediately - you’ll need to find their village first).
To progress the story, you’ll have to create and control a native alien using your new “power.”
There’s also a breast-based "flora pregnancy" involved in Act 1.
The canyon is Act 0, and it’s designed to introduce the core mechanics and the strange world you’ve crash-landed into.
Yeah, it's needed to quickly grow certain types of your "children" (a controlled baby alien isn't as useful as a fully grown one).
There will also be different types of milk used to progress or solve specific puzzles.
But like I said, these are planned for future acts - that’s why I need to develop the foundation of the lactation system now, so I don’t end up rewriting too much code later.