I have another contribution of ROMS if you are interested. These are all TI-99/4A games. I don't think the archives here have them in the .ctg file format used by the TI99sim emulator. I did download a few from the archives here to check, and I saw only .G and .C formatted files.
I should probably provide some background. The creator of TI99sim had a separate conversion program that was supposed to be able to convert various different single and multipart binary dumps of TI-99/4A games into a standardized .ctg format for use with his emulator. Unfortunately, the conversion program does not appear to work anymore. It crashes immediately on Windows 10 and I have been unable to recreate working .ctg conversions on Linux. The .ctg formatted files are very difficult to find online, as everyone was expected to make their own with the conversion program, and I was only able to retrieve my current set through pasting a website link into the Wayback Machine.
This zip file contains three folders. "Dated" contains the 96 TI-99/4A games that I was able to identify with Titles, Developers, Publishers, and Date of Release supplied. "Original" contains the original archive of 129 games that I retrieved from the Wayback Machine. 96 of these are renamed and in the "Dated" folder while the remaining 33 appear to either be duplicates or just games that I could not identify. "BIOS" contains the TI-994A.ctg file required to run TI99sim and spchrom.bin, which is required to run the speech synthesizer. I can confirm that both of them work. The spchrom.bin may already be archived here, but I don't think TI-994A.ctg is on the site. I found a forum post here from 2016 where someone was unable to find it.
viewtopic.php?f=13&t=4977&p=23767&hilit=ti994a#p23767The TI-994A.ctg is sufficient to get the emulator to run. I have heard mention of two other .ctg files. The "Gram Kracker.ctg" is used for extra graphic functionality and "ti-disk.ctg" is used for disk emulation. Unfortunately, I don't have any confirmed working versions of those two optional files yet.
I hope that these files will be more convenient for end users, especially since TI99sim is the standard TI-99/4A emulator for RetroPie and can only run the .ctg conversions.