TI-99 Help


Working on getting Classic99 to run my TI-99 games.
I read where it will play games with the ctg file extension
However for the life of me, I can nit get them to work.
I need Classic99 to use the all files option to find them, but when I load them nothing happens.
Is there a tutorial somewhere on how to get Classic99 to recognize files with the ctg extension.
Thank you.