[url=http://www.youtube.com/watch?v=aqjVwDCocrI]Descent Saturn.[/url]

Not Denscent, nor Descent 2, and definately not 3.

Becasue you didn't get mega-missiles nor smart missiles in the freeware version.
-and Parallax made nintendo-hard look like child's play. Seriously, we could do a 30-minute speed run through all our NES games, yet level 6-7 pretty much made us shit bricks.