It's no secret that vampires are sexy as hell. No small number of books, movies, TV shows, manga, video games etc have proven that over the years. Blood isn't the only thing they can suck out of you, after all. 

Continuing this theme is Crimson Veil, a NSFW RPG made using RPG Maker. You take on the role of Mila, a member of a vampire hunting organisation. You complete contracts to earn gold, and an interesting key mechanic of the game involves trying not to turn into a bloodsucker yourself. But that might be hard when you consider the ghouls and succubi standing in Mila's way. Another cool feature is that most objects in the game world can be interacted with, so make sure to go out of your way to find secrets.

Crimon Veil marks developer mkrudesign's first time using RPG Maker. That being said, a surprising amount of thought has been put into the game and its story, especially when consdering it's a one man project. Right now the game is only available as a free demo, which includes the first four chapters of the story. This includes 8 bad endings, each with their own game over screens, and there's an option to surrender a fight instantly so you can collect those sweet CGs.

If this sounds good to you, download the free demo here. Don't forget that the game is still in development, and mkrudesign will appreciate any feedback you can give if it can improve the final product.