Uhh ok, I made a game, and it should fit in the maximum file size, but it isn’t made with any flash program, and i dont know how to change the file extension. The same problem pops up with uploading a pic since my pictures come out as a bmp.
You can’t convert an executable game into a Flash game. It needs to be made from the beginning in Adobe Flash to get the .swf extension and be uploaded to the site. You can read more about learning Flash and find out where to get the free 30 day trial for Adobe Flash in this forum.