First I tried it using BSNES (073), it worked but there were odd graphical corruptions (the Wily capsule and the 'Z' in the title particularly)
I then found a different MMX 1.1, only this one was '.sfc' I then used a tool to make sure its checksum was okay.
That cleared up the graphical corruptions.
I then put it on my powerpak to play it on real hardware.
For some reason or other I hit two areas that cause freezing.
*Right before Vile in the intro stage
*The minute you begin to move in Launch Octopus's stage (Somehow I managed to remember that 888888888877 password from my youth
After trying real hardware I went and tried it again on BSNES, and it froze in the intro right before Vile.
There were also other weird graphical..I don't know how to describe it.. stuttering?
Like when I compared the title screen animation the X and the Z animates in an odd way and during the intro stage when the bee copter things fall there is noticeable..I can't describe it, just something looks off.
I really like the attention to detail. Specifically the icon in the boss meter being changed from a Wily skull to a Sigma emblem.
I did a quick play through of Chill Penguin, Flame Mammoth and Storm Eagle and everything worked fine. Thank you for making this.