To create your 'romance visual novel', start by planning the plot. Decide on the type of romance - whether it's a sweet first - love story or a more complex, angsty relationship. Next, write the script. Make sure the dialogue is engaging and reflects the characters well. For the visuals, you can either draw them yourself if you're an artist or hire someone. As for the programming part, like I said, Ren'Py is a great option. It has a lot of documentation and a helpful community. You can also add music and sound effects to enhance the overall atmosphere of your visual novel.
First, you need to have a good story in mind. Focus on creating interesting characters with their own personalities and backstories. Then, you can use software like Ren'Py which is great for creating visual novels. You'll also need to learn some basic programming skills related to the software to add interactivity. And don't forget about the art - you can either create your own or find some royalty - free art that fits the romance theme.
Begin by brainstorming ideas for your vampire romance. What makes your vampires different? Are they able to walk in the sun? How do they meet the human? Once you have your ideas, start writing the script. Write detailed descriptions of the characters, their appearances, and personalities. When it comes to the visuals, you can look for free or paid art assets online. You might also want to consider adding music and sound effects to enhance the mood. For the actual creation, you can use software like Visual Novel Maker. Test your visual novel with friends or beta testers to get feedback and make improvements.
To create a Lovecraftian visual novel, start with the story. Come up with a plot that involves elements of the unknowable and the terrifying. You could have a protagonist who stumbles upon an ancient cult or a forbidden artifact. For the art, use a color palette that gives a sense of gloom and doom. As for the characters, make them complex, with their own fears and desires that are affected by the horror they face. And, of course, add elements of the supernatural that seem to defy explanation.