Bombshell Koopas, originally known and known in Japan as Nokobon or Nobokon, are a black-shelled species of Koopa Troopas found in the game Super Mario Land. Bombshell Koopas are not immune to Superballs, and they explode shortly after being stomped (although the blast radius is not very large), making them similar to Bob-ombs. They replaced conventional Koopa Troopas in Super Mario Land because it would have taken too long to program the ricochet effects of Koopa shells on the Game Boy.


Bombshell Koopas are the most common enemy in Super Mario Land, appearing in all levels except for 2-3 (the underwater level), and 4-3 (the flying level). Like red-shelled Koopa Troopas, Bombshell Koopas do not walk off edges, but merely pace back and forth on the platform.

In Super Mario Land 2: 6 Golden Coins, Bombshell Koopas do not appear, as they have been replaced by normal Koopa Troopas instead, and while a new Buzzy Beetle-like enemy fills the exploding-shell niche, their name, Noko Bombette, is a reference to their "Nokobon" predecessor. (Bombshell Koopas were only referred to as such in the 2011 port of Super Mario Land to the Virtual Console, almost twenty years after Super Mario Land 2: 6 Golden Coins was released)