Projects need to be clear what version is created and current developed.

[DanielBitencourt]

I had a bit of difficulty figuring out which version my old projects were created in, I found out by analyzing the project creation dates and the release dates of the Godot versions. I have now created a personal solution to solve this problem, for all of my new projects I will specify somewhere in the project or file the creation version, and also when I change versions in the same project.
Why isn't this basic and essential issue solved by Godot?

[Calinou]

This is already implemented in 4.0: #4355 (comment)

This solution won't be backported to 3.x, as it involved some backwards-incompatible changes. It should however be possible to distinguish Godot 3.x projects from Godot 4.0 projects by looking at the config_version integer in project.godot (4 is Godot 3.1+, 5 is Godot 4.0+).

[Zireael07]

I'm guessing he wants to distinguish between various 3.x versions?

[Calinou]

Unfortunately, this can't be done retroactively (other than distinguishing between 3.0 and 3.1+). That said, distinguishing between 3.x releases after 3.3 is less important because compatibility breakages between 3.3 and 3.5 are much less common than between 3.0 and 3.3.