Gigatron Hackers

Did you check the console for any error messages?

I would guess these ROM's have romTypes that gtemuAT67 doesn't know about, if I'm right you'll get a message in the console similar to this:

Yes I don't see this messages because my console windows was filled with numbers ...

But in 1st post in this thread I can see screenshoot of the gtemu with ROMv6 How can I do this

This is what I get when I put them in my own "roms" folder:
Their romTypes need to be added to gtemuAT67, I assume that was done for whatever version was running earlier in the thread. Or a different emulator was being used.