Just a bit of trivia - both Great Giana Sisters (ie Super Mario Bros clone) and R-Type were coded by Manfred Trenz. He seemed to keep perfecting scrolling techn

Just a bit of trivia - both Great Giana Sisters (ie Super Mario Bros clone) and R-Type were coded by Manfred Trenz. He seemed to keep perfecting scrolling techniques & 'cloning' games. He made a C64 game called Katakis that was so similar to the R-Type arcade game, Activision blocked its release & threatened him with a lawsuit [1] - unless he accepted a contract to make Amiga & C64 Versions of R-Type. (He also made Turrican. The guy was a genius. His C64 games are one of the things that inspired me to become a programmer.) https://en.m.wikipedia.org/wiki/Katakis https://en.m.wikipedia.org/wiki/Katakis