Well not immediately an idea for an image that pulls everyone in, though it should stay true to the game since no use to pull people in and then have them disappointed.
Do like the church idea and leaning heavily on the females in the image to attract players might be wise, with not a to strong emphasis on a perceived fantasy nature of the game. Also make sure your first tag reads inces and second more incest. :evilsmile:
Thing is certain types of games and fetishes is where the easy money is like heavy easy to reach incest, especially if Mom, sister, daughter based and with some exceptional renders. Though I do not have really played his game, the comments did keep me away, he is praised for delivering really breathtaking renders, if maybe not a good game.
Also some of those better earning artists had the luck to enter the market in a time when way less games with any quality were around, so had it easier to build a paying base, where you now compete with way more games, even if not many are even close to quality of Wicked Choices. (This makes it also very easy for players, maybe to easy to see something in the game they do not like and just run away to another game that promises easy fapping without even trying it).
Third thing is you do demand some open mindedness from people due to the nature of the story, the ability to read and have some patience as well. That is not for everyone and does scare of some people.
Fourth thing is it does take quite a long time sometimes to build up a decent following and even longer for them to decide to spend on the development of the game or to reallocate funds from a game they already support.
Only thing I can advise you as Wyrme, Sierra, El Bacca, Turret and others did is do make the game you want to make and enjoy to make (Which is the game we decided to support and do enjoy to play). Maybe do throw in a few lighter stories, comics or games in between or to the side to interest people in your work that have a way lower and easier entry to them. This could be related to the stories you want to tell in game or just something completely different.
edit: Another thing you might consider when have a bit more time and your personal life calmed down a bit is to create your own website, where you can direct people that follow you on Patreon, this site and other gaming sites you promote Wicked Choices on to to build a stronger bond with those who do follow your work and have done in the past like buying your book. Maybe display older works there as well, links to buying your book, some art in future from the artist(s) you want to bring in. Crossover recommendations for/with other devs, fanart of other artists connected tou your games and worlds, those in between chapter thank you's if you decide to take them out of game, backgrounds to the worlds of your (future) game(s), maybe requested renders for a small price and so on. (thinking for example of little FAP sitting on Wyrme's shoulder berating
@Wyrme for dressing in a sense that is not befitting of the high priest of the CoOLS, thinking of those chaps yes:evilsmile:, while his kittens nod in agreeement with Syrina)
