Complex sentence: The best known version in non-Japanese markets is the Super NES port, which is the only English version of the game and was published by Koei, and released in 1994 in Japan and a few months later (around 1995) in America.
Split into simpler sentences: The best known version in non-Japanese markets is the Super NES port, which is the only English version of the game. It was published by Koei, released in 1994 in Japan and a few months later (around 1995) in America.