Worst NES Games Ever No. 8 — Deadly Towers
NES games were notoriously tough, but this one took things overboard. You play as a dagger-tossing prince who tries to kill impossible-to-kill creatures and find hidden shops to upgrade his equipment in order to make the creatures only slightly impossible to kill.
In the ages before online walkthroughs, the only way to progress was to fail miserably for hours on end, then bang your head against the wall until you hallucinated success.