romance and gender in the new world
It's a known phenomenon: when there's no guns in your fantasy setting, players will try to create the first gun. When there's no Mexican food in your fantasy setting, players will try to create the first Mexican food. When all necromancy is evil, they'll try to make a necromancer who is good. When there's no civilized orc... when there's no magicians at all... when there's no sentient robots... your players are going to go out of their way to change that.
Usually I find that people have an easier time grasping the concepts of asexuality, aromance, and non-binary genders when you give them the example of a robot. We just kind of assume that if a robot doesn't experience lust, which it wouldn't because it has no biological sex drive, then it can't experience love; and if it has no genitals, we just kind of assume it would have no gender. I could spend a lot of words taking that all apart into its component pieces, but that's not my project -- my project is making a game.
Characters in [whatever this game I'm working on is going to be called] have gender that works like this: If they're blue, they're girls; if they're not blue, they're boys. There's not much in the way of associated gender roles, archetypes or stereotypes beyond boys are more brave and girls are more smart. Furthermore, these characters are not capable of romantic or sexual attraction or of romantic love.
Happy Pride! ;)