[@Ruiner] in the main thread I put 1899 as a rough date, and put in the seeds on fantasy ideas about automata and the like, so feel free to go a bit wild, honestly everything's somewhat flexible according to rule of cool. I imagine prosthetics to be more or less Fullmetal alchemist level at the most high end, though most will probably be more temperamental and rickety. I'd say just write a character concept draft and if anything goes a bit too far, we can just tone that down a bit when we get to it