Re:Commander Keen source code released
by jodrellblank on Wednesday September 17, 2014 @01:36PM
(#8331224)
And there's a Sopwith for iOS as well: https://itunes.apple.com/us/app/sopwith-barons/id577086057?m...
I'm not sure if you'd call Sopwith a sidescroller but it managed to scroll sideways on CGA.