Super Noah's Ark 3-D Trivia (SNES)
Because Super Noah's Ark 3-D is the only unlicensed Super Nintendo cartridge... it doesn't actually work in a Super Nintendo by itself. Indeed you must attach a working (legitimate) SNES cartridge on top of it in order to get it to work. This is due to the copy protection method used on the Super Nintendo.
Rumor has it that the Wolfenstein 3-D engine was given to Wisdom Tree by id Software as a kind of 'revenge' against Nintendo for all the censorship that Wolfenstein 3-D had to go through to be on the Super Nintendo.
The Piko Interactive 2013 release for the SNES uses a standard North American SNES cartridge and, therefore, can work directly in a North American SNES without requiring another cartridge.
Super Noah's Ark 3-D is the ONLY commercial unlicensed (by Nintendo) Super Nintendo game in North America and possibly the world.