are we really just upping game screenshot now?

This really depends on your definition of "game" which is something that has been getting more and more blurry as time moves on, so let's first look at a selection of what we currently have:

• this is a combination of custom_maid_3d + custom_maid_3d_2 + custom_order_maid_3d_2 which are essentially the same thing. I'll whip up a BUR for this later this week

For comparison, some more classic 3D _(medium) tags:

But to return to your question and hopefully give a satisfying answer:
If you consider Source Filmmaker a game: Yes, we've been doing so for over 9 years
If you don't consider it a game: Yes, we've been doing so for over 6 years

Getting lost in the minutia of whether posts like this get uploaded at all is interesting to say the least. Taking a screenshot of a game and calling it "made by x artist" is kind of ridiculous.
And if the retention rate of all those "3d Custom Girl" indicates anything if at all, is the validity of a posts like this on Danbooru.

Dannk said:

Getting lost in the minutia of whether posts like this get uploaded at all is interesting to say the least. Taking a screenshot of a game and calling it "made by x artist" is kind of ridiculous.

If that artist is the one who did the modelling work how would it be ridiculous? It's not like parts of the rendering process being ready-made is so unheard of, and the modelling part is still an artistic skill.

Dannk said:

Getting lost in the minutia of whether posts like this get uploaded at all is interesting to say the least. Taking a screenshot of a game and calling it "made by x artist" is kind of ridiculous.
And if the retention rate of all those "3d Custom Girl" indicates anything if at all, is the validity of a posts like this on Danbooru.

Don't worry. I'm very much aware about what both you and the flagger are getting at, which is the "launching Steam, import downloaded model, spamming F12 ten times, and calling it a day" thing. And I wouldn't dare to upload stuff like that without passing it through the queue at the very least.

Regarding this image of loshi cm3d2 specifically:
I came across the Twitter version here and it jumped out to me and over 10K other Twitter users.

I usually like to do some digging before I upload stuff from an artist artist that I don't know and saw that they've modeled Doki themselves in Blender and are using Custom Maid 3d for the rigging and rendering.
https://x.com/Loshi_CM3D2/status/1809156884550844689
https://x.com/Loshi_CM3D2/status/1810833006845907162
https://x.com/Loshi_CM3D2/status/1809962730792845544

If something looks nice, isn't against the TOS, fits in the box of things I personally like, and if at least some effort went into it: It gets my personal green light to be uploaded.
I don't care if it was made in Photoshop, Blender, Koikatsu, Custom Maid, Minesweeper, Visual Studio Code, a Linux Terminal, or on an actual brick wall with spraypaint.

Why the giant table? Two reasons:

• I wanted to practice my workflow with Excel and DTables.
• Proving a point that a flag based on "a screenshot does not belong on Danbooru" alone without further context is baseless.

If they don't like something else about the image specifically, then they should mention that. People have been granted 140 characters to flesh out their flags. They should use them more.