This is the unified collection of my available Gaia DR3 catalogs, all with semi-accurate Morgan–Keenan Classifications derived from photometric and spectroscopic data collected by the ESA's Gaia mission that was included in their third data release.

Please note that while the Gaia DR3 tables included a wide variety of data to work with, not all of it was of the best quality. As well, due to the number of stars involved, the actual work of processing that data into a SpaceEngine-formatted catalog was largely automated through the use of Python scripts, of which I'm relatively new to working with. There are definitely quite a few misclassified stars in this catalog, but I plan on making a new, better classifier from scratch once DR4 is available, since they've said that it will contain much higher quality data.

If you are interested in the process behind how I made these catalogs, there is a Technical Documentation post in the discussions of the old beta addon, as well as additional details in that item's change notes.

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These catalogs are only duplicate-filtered against the default SpaceEngine star catalogs and shouldn't be used with any of the older DR2 addons, except for the DR2 White Dwarfs addon that used to be available on the SpaceEngine forums.

If you are using one of the DR2 addons, the collection for the filtered DR3 addons is available HERE, and will only add stars that aren't already included in any of the DR2 packs.

Other than the White Dwarf pack, these catalogs are not intended to be used together; you must pick one.

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Choose the pack based on the amount of RAM you have available.
(Or don't. I mean, it's up to you, really.)

250K— Requires a minimum of ~5.69GB of available RAM to run.
400K— Requires a minimum of ~5.91GB of available RAM to run.
700K— Requires a minimum of ~6.09GB of available RAM to run.
1M— Requires a minimum of ~6.34GB of available RAM to run.
3M— Requires a minimum of ~7.79GB of available RAM to run.
5M— Requires a minimum of ~9.13GB of available RAM to run.
7M— Requires a minimum of ~10.51GB of available RAM to run.
14M— Requires a minimum of ~15.24GB of available RAM to run.
30M— Requires a minimum of ~23.58GB of available RAM to run.

Note that there is more required to run a 3D program than just RAM; more stars to render means more strain on your GPU/CPU, so having enough RAM is not a guarantee that it will run. Additionally, this is peak RAM usage measured from the observation point in the thumbnail with the magnitude limit at maximum. Actually moving the camera into a higher-density area may require more, which is why these values are listed as minimum.