Please do not try to explain English to me. You do not know English and your machine translation obviously does it wrong.
https://itch.io/games/tag-space
Space
The larger universe outside of Earth's atmosphere. Sometimes really, really far outside of it.
You try to cite the description on itch for the tag "3d", yet you failed to look at the description of the tag "space". Your screenshot put "space" as an explanation of "3d". That was wrong and very funny. Instead of laughing you try to insult me again. You have no manners.
If the blue written word would have been "spatial" it would have been ok. Spatial is to 3d what flat is to 2d. The other blue written words were not any better. It is was bad translation.
No one uses the word spatial in the context of number of dimensions.
Really?
https://en.wikipedia.org/wiki/Dimension
Time is different from other spatial dimensions as time operates in all spatial dimensions. Time operates in the first, second and third as well as theoretical spatial dimensions such as a fourth spatial dimension
And even here https://ru.wikipedia.org/wiki/%D0%A0%D0%B0%D0%B7%D0%BC%D0%B5%D1%80%D0%BD%D0%BE%D...
"Пространственные измерения: классические физические теории описывают трёхмерные физические измерения."
"Spatial dimensions: Classical physical theories describe three-dimensional physical dimensions."
A platformer in which the environment and character are flat pictures (sprites), completely 2D. A game where the character or the background (or all together) is a three-dimensional model is a three-dimensional game.
I disagree. If you would sell me a "3d platformer game" and would sell me a game that exchanged the sprites for 3d models, I would demand my money back. Also, the 3d models are also flat to you, they are just rendered very often instead of being sprites. Speaking of sprites, the 2d sprites I know, that are animated, do not look flat. 3d in this case is about the rendering and the use of the 3d features of the engine. It is not about the game play.
Oh, and it even is a suggested tag (without description no less) https://itch.io/games/tag-3d-platformer
Probably in a drawer labeled "kitchen" or "utensils." That's it, you've already put the plate in that category, you only have one plate, you can't put one item in two different categories
But you have the choice. It fits several categories. And if you and your friend pack those boxes, you might put the plate in kitchen and your friend in utensils. No one is wrong. And for digital things you do can put them into both boxes at once.
You got the tags right. That is labels you put on boxes. You can also not attach labels to the box. And they can be put on the wrong box or you can have a fight with your friend what label to put on which box or what to write on the label or what crayon to use.
Then you argue kitchen is wrong, because the inside of the box is in fact not a kitchen, but utensils for the kitchen. And your friend insists, the labels have to say where the boxes go, you insist the content has to be labeld, and then you go argue about the meaning of kitchen, as it as some do eat in a kitchen and others only cook there, so why would need a plate in a kitchen, you need it the dining room.
Where in that tag does it say this game has to be for adults?
And this is, what you fail to understand. It is not about the actual word, it is about the expectancy people have, when reading the word. 3d is a historical term that was used when cpu/gpu manufacturer came up with it as a marketing word. "3d accelleration". They could have used any other word, even virutal reality. 3d is what stuck and it was used for a while. But as I have shown, it is not used anymore. Words change meaning. And what once was 3d is now split into third-person, first-person, walking-simulator and the old word 3d is more and more used by things that only feature stuff that is 3d. Maybe it was always used by such games, but since actual 3d games do not use this tag anymore, they became visible.
It's a three-dimensional game. Is it first-person or third-person?
This is the wrong question. You have to wonder, what the developer thinks people will use to find the game. What will the developer think is important to say about the game. Or what will the users think is important to say about the game. Or what will a site admin think is important to say about the game. It is not about any correct definition of the game. It is always opinion. But the difference is, where you release the game and who does the tagging.
So go to Steam and look up the tags. You will see the vote of the users, what are the most important tags for the game. If it is on Steam.
If the tag description doesn't fit, then why won't they change it?
Change it yourself. I am serious. Click the suggestion button and give a better description. And mind you, they are asking for descriptions. And not definitions. Itch is user driven. That includes you. Arguing about any meaning of 3d will not help. People, including me, have a different opinion than you.
There's no tag that can perfectly replace the 3D tag.
You got it! Not even 3d can replace 3d. The tag is outdated and should not be used. It is not important information. Not since every smartphone can compute 3d.
find me some 3DCG games that are not adult games
Look at the visual novel plus 3d combination on Steam. Most of those games are non adult and 2d with 3d renders. If you cannot find those, you did not look.
Or just look here, you lazy person. You have to deselect the adult content in your settings!!! You can also try some rpg combination. But "3dcg" games that are not adult will tag their story and not that they have pictures.
https://itch.io/games/genre-visual-novel/tag-3d
Why doesn't the 3DCG tag have a description?
Why is there no description for the 3d platformer tag?
Did you submit a suggestion for the description for either of them? No? There is your answer. No one cares!