What issue do you have with it? I've just checked the download and it's running fine in Vice3.9 SDL2 and on my Commodore 64 breadbin (PAL).
I've replicated the issue with the black screen using 3.9 GTK and I suspect it may be the same with the SDL version.
When I checked the settings, I found that (I have this on by default) autostart mode is set to Inject into RAM. when I have it as a virtual filesystem, I also get the black screen
I suspect this is also going to be the same for C64Forever also.
I will see if I can figure out what is going on with this though. Thanks for letting me know.
It may take a few days as I'm working on the next Game Jam, but I will give this some time also
Ok - I just had a quick look and have made a change. It now runs on VICE without using Inject to RAM. Can you check please?
I still cannot get it running on C64Forever. Is this the full version or the free version (I just have the free version)
I also don't have a Commodore Ultimate Elite so I am wondering if it's a similar issue
The new version you made works on the Commodore Ultimate Elite, and once I choose "Inject into RAM" in Vice 3.8 (Mac) it also works. So everything is good now :-)
One other thing, maybe you should rename the webpage to "Tile Quest" instead of the current "Memory Game" so that it is easier for others to find your game when searching?
Merry Christmas!