Because you need to develop two elements very well:
-The relationship between the protagonist and his beloved, to the point that we really care about them.
-The relationship between the female lead and the "antagonist".
And that requires too much effort for the profits most developers hope to make. It is much easier to show a scene of the protagonist with a poor performance in sex and then show the antagonist with a giant cock. Of course the female lead must not have a brain.
Most NTR games don't make an effort to show a really believable context of their world either. It doesn't matter whether it takes place in a fantasy world or in a futuristic one, at the moment of truth it doesn't matter. In fact for a good NTR it is not even necessary that the antagonist was a bad person, it could simply be another side of the coin.
That's why I think that one of the games that can really become one of the best NTRs is Our Red String by Eva Kiss. It has elements that are not seen in many games:
- Credible and well-written characters. You really get to care about the fate of your protagonists.
- Consistent world, with problems that are too reminiscent of our world.
- Non-virgin protagonists. The two protagonists have a previous sexual past, with its multiple fetishes and experiences. Their decisions or lack of them are a consequence of the world they live in and the problems they have to face.
- There is a lot of constant build up if you decide to go the cheat route.
It's still in development, but it's really promising. An oasis in the middle of the desert. But the problem is the same, it is a game that is cooked over low heat and although the reward can be great, not many people are willing to invest that time.
I'm not that sure it requires the greatest amount of effort.
As I pointed out in my previous post the scenarios can fairly easily be created. If you mixed those combinations I gave you have the base for thousands.
As we know it isn't that hard these days to generate the details and so on for filler to create the relationships and other stuff.
The point being how much work is it if you can have a program write most the story for you. At that point the largest amount of work is artwork. Given one of my current projects is developing a large scale character art generator that will go away in time as well.
In truth if someone wanted they could use image of different people and deep fake and create images of nearly every character type in every potential pose you might want for a game.
We don't need to go near that level of complexity to create game better than 99% of the current NTR games in existence.
We create a list of things like I did before. We can select randomly from it.
We also create a list of male and female and sir names.
Back ground generator, location selection or generator.
Then event types and listings and selector. These would be event scenarios.
This could be stuff like how they met. What the first date was. Marriage, first child, second child...
These would be events leading up to the change and the cheating.
Then you create a list of events that could occur after the cheating such as catching them in bed, co worker informing you, confrontations, mental dialogs showing protagonists feelings, ...
It wouldn't be that difficult to create a game that has several thousand stories in it.
You could even let the player write some of the story by their own actions. Do they get married in a church, cathedral or save money and get married at the court house or beach or backyard.
The scenario that follows is basically identical you change out the name of who officiated the wedding the size of the people attending and the background image.
You can do the same thing with many scenes first kiss, first date, child birth, ...
You also don't need to play things in the same order.
Some scenes or events that happened before the change could be viewed through the protagonist looking back at his life trying to figure out where he what he did wrong or simply remembering what he like about her... Asking how it got to this.
In that case the game could start at the point of discovering the cheating going on.
