The NES was released in the UK and Europe in 1986. It was first licensed to Mattel, who completely bodged up the release, by only making it available in chemists and smaller department stores. They also made the games around $110 ($240 in 2015).
Released in 1987 by Data East, The game's plot revolves around the titular Kid Niki, a Radical Ninja in Training, as he rescues a princess. Fairly standard stuff for 1980s NES gaming.
While Kid Nikki hasn't aged as well as other mainstream NES hits like Super Mario Bros, it holds it's own as a fairly decent action sidescroller. If you own an NES, it might be worth picking this little hidden gem up and enjoying it.