Today, "Teenage Mutant Ninja Turtles".
Not a great game, I think we all agree. Plus the US version (which I think is the one currently available at the site) can't be finished without cheating. Others did found out much before me:
Code:
https://www.youtube.com/watch?v=BDurUuIUiWo
However, the same user who posted the video notes that the UK version (titled "Teenage Mutant Hero Turtles" because of censorship) should work fine. And after some searching I managed to get a copy of that one:
Code:
http://www78.zippyshare.com/v/ecbOlbyh/file.html
I'd recommend that the TMNT blurb on the site acknowledges the bug and offers this other version as an alternate download.