Hi Seraf, I'm really glad you enjoyed the game! Here's my answers in order. :D
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1. I'm really glad someone liked the fact Leon is trans, since I wanted to get some more transness in there. In the Rosettaverse, everyone on Earth is raised NB until they reach a certain age, and then they get the ability to choose during their Distinction, and sometimes opt to take Endegene and/or change their name (But they can have a second/third/Xth Distinction whenever they want). They usually get a gender-neutral 'birth name' up until that point, which they can opt to keep. I've been explaining it a little bit more in my book and the short stories I'm working on right now. It'd be cool if I could work in a good way to choose that for the protag in the game. With Gabriel, though, it's an error - the pronoun code in my game is buggy as all get out due to some changes I made halfway through development. :/
2. The books originally started as a way for me to have the player spend more time with Esra (AKA I wanted excuses for flirting), and show both the player and Esra's personality. But I wrote them with almost every book being representative of their current situation. Most of the intentional Ending 11 foreshadowing happens during the optional Progenitor memories, but hey, I'm happy to look smarter than I am. :)
3. Well I'll be making a lot of noise and sharing it here when it's published, so I'd love it if you (and everyone else) checked it out when it is! I've written the full draft, I'm putting it down to rest before going back for edits, then looking for beta readers, etc. Hoping to get it traditionally published, but who knows? I'm just writing short stories for comps in the Rosetta-verse in the meantime, fiction-wise. I'm hoping to incorporate some of the expanded lore back into Trigaea at some point.
4. They're *all* my darlings! I had to do it that way, because I didn't want to 'punish' anyone for picking an ending I didn't ideologically agree with, so I forced myself to treat them as equally as possible (Except for Ending 1, which is sort of a Bad End in a different wrapper). I do have an idea of which one is Canon if I ever did a Trigaea 2, but I won't share it unless that comes up. :) But if you held a gun-blade to my head, I'd saaay...
- Ending 3, because Esra winds up in a X'irii body, and it feels a bit romantic.
- Ending 7, because I love the contradiction that nobody picks it in a game, yet as a species we choose anthropocentrism all the time in reality.
- Ending 12, because well, it's happy and bitter-sweet, and Esra and the player are still there (So I can still ship them).
On a side note, can I ask you to remove the bit about "being a way to tell you're in a simulation" in your message, or put it behind a spoiler tag? I don't want to ruin any twists for folks reading the comments before playing. :)