I just found this writeup that apparently came with a program called QuikMenu.
The 8514/A card simply provides a high resolution of 1024×768 with 16 or 256 colors in this mode, depending on the amount of memory installed on the card. This card works on any Micro Channel system unit that has an adapter slot with the video extension connector. The 8514/A card only functions in that slot because it only has a high resolution processor and not a VGA compatible processor. When the system is running applications in VGA mode (or lesser resolutions) the 8514/A card simply passes the VGA information from the motherboard VGA controller through the Auxilliary Video Extension (AVE). When applications require high resolution, a TSR program called HDILOAD (provided with the adapter) installs the 8514/A Adapter Interface (AI) code. The 8514/A AI is basically a gateway to the 8514/A adapter. Since IBM never published the hardware register information for the 8514/A, all applications had to write to the AI, which in turn writes directly to the hardware on the card. The 8514/A can not function unless it has a video system to supply VGA mode (and lower) video signals.
It seems to be saying that IBM's 8514/a card was an MCA card that relied on the onboard VGA for all other resolutions. HDILOAD loads the AI so that it can be called by programs that use it. Competitors like ATI sold standalone VGA cards that also supported 8514, but wouldn't by default because HDILOAD uses up 28k of memory.
Anyway, I'm not aware of any other 8514 games. Ron Balewski told me that he had made a big bet on VGA before it was a broadly adopted standard and the bet paid off. He made the same bet on 8514 and lost. It seems that he was unaware of any other 8514 games. In January 1991 he wrote, "I'd like to have one of the first (if not THE first) games on the market that uses the 8514/A standard."
Games may have been in development, but it's likely that most game programmers would have waited for a reasonable installed user base before making games that would require an 8514/a. It makes sense for CAD software to quickly adopt since businesses could easily afford 8514 hardware and would pay big bucks for the higher resolution. Ron was just writing a shareware program that he hoped a small percentage of users would send him $25 for. If the standard had replaced VGA, it would have been worth his effort and he would have had a lead on everyone else. There may have been other shareware or independent authors who got all the way to actually releasing a game, or Ron might have been the only one.
MoraffWare was always at the leading edge for graphics and claimed to be the first to feature SVGA resolutions in their games. They skipped 8514 and went directly to the various SVGA chipsets. If they didn't use it, it's quite possible that no one else did.
Version 0.6 of MJ8514 was released on April 19, 1991, and I've just found a newsletter from September stating that IBM would discontinue the 8514/a on October 2.
"Today entirely the maniac there is no excuse with the article." Get free BeOS, DOS, OS/2, and Windows games at RGB Classic Games