Marble Madness for the NES (I mean, I don't know why I am specifying that...) doesn't work - black screen on title screen. It worked kind-of in JSNES. Something wrong with the GPU code, I think it is not showing the letters because it errors on an empty tile or something and is caught silently by chrome.

Game: Marble Madness
Browser: Firefox 52 ESR, Latest firefox, latest chrome, iOS 11 safari* (touch controller added), and edge