Poor graphics and music. Somewhat complex controls.
One of the first titles that helped launch Nintendo's 4-player accessories, Play Action Football was Nintendo's answer to the popular "Tecmo Bowl" series, bringing 4-player support, 8 NFL cities with real players, and a sim-based gameplay engine to the gridiron. You could even work your way through a season and try to get to a Super Bowl of sorts.
Unlike Tecmo Bowl, this game shows gameplay in a overhead view from a bit of a diagonal perspective, somewhere between 3/4 and overhead. The graphics themselves are not that good. Movement of characters is not smooth at all and there's not much detail, plus it's hard to see when they all bunch together. A couple of nice touches are the scoreboards when you score a touchdown and when the referee signals a score or 1st Down. Sounds aren't much better either between redundant music and so...