I would like to provide a little more clarification on this issue, since it gets into one of my fields of interest, which is intellectual property rights and copyright laws.
But first a disclaimer: I am not a lawyer, and I don't provide legal advice. When I talk about the law, I am giving my best understanding of what I have read and/or heard from people who know this stuff better than I do, and I won't accept any liability for the information I provide. /disclaimer.
The interactive licenses are actually only needed when you are using the 3D assets themselves in the game in a way which allows the player to interact with them directly, hence the name "interactive license." As long as you are using the Daz assets to create 2D images, and the players of your game are not interacting with the 3D assets, you do not need an interactive license.
Even though the Daz rendered images in these games look 3D, and we call it 3D art, the fact is that it's still a 2D image. Take Project Myriam, for example. The player can't take control of the camera, rotate it, and look at the image from a different angle. The image doesn't actually exist in a different angle. It only exists in a 2D form. So, if you're making a Ren'Py game with Daz render art, you will probably never need an interactive license.
It would be the same for an RPGM game in which you used Daz to render out still images for character sprites or environments. Even if you have animated character sprites, as RPGM games typically do, you would normally animate the sprites by splicing together a number of still 2D images. And if you had cutscenes which used Daz renders, either still images or animations, they would still be 2D images and animations, despite looking 3D, because the player could not control the camera and view the image from different angles or different levels of zoom.
To give you an example of when you would need an interactive license from Daz, let's say that you are making your adult game in the Unreal engine, and you're using a Daz environment, such as one of those completely furnished houses which are available in the Daz store, as your game environment. And you use a Daz character, wearing Daz clothing assets, as the player character in the game. The player is now controlling a 3D Daz asset, walking around in another 3D Daz asset, while wearing a 3D Daz asset. For that, you would need separate interactive licenses for each and every asset you used.
Or imagine that you create a game, in whatever engine, which allows the player to modify their outfit. They can load in different clothing items, rotate the camera to show the clothing from different angles, maybe change the outfit colors, and so forth. This is interacting with the actual 3D assets, the clothing, so this would require an interactive license.
But as long as you are just using the Daz assets to create 2D artwork which you put into your game, you don't need an interactive license. You only need the license which comes with every asset you buy in the Daz store, or the Renderosity store, or the Renderotica store. Basically, if you bought the asset, and didn't pirate it, you also received a limited license to use the asset in creating artwork, and you don't need any other licenses to use your artwork. You would just need additional licenses to use the 3D assets in other ways.
