But, Koopas are nice sometimes. His Offensive Power Shot is the Water Bomb, where Koopa performs a special drop shot that forces the characters to get close to the net. An unused blue shelled variant of a Koopa Troopa can be found in the game files.

Koopa Troopas appear in the first Mario Party game to award the player with ten Coins each time the player passes the starting point (in a similar style to the game Monopoly). Although most Koopa Troopas are affiliated with Bowser, they seem to be cheerful and friendly creatures intent on doing their job. Species In Dance Dance Revolution: Mario Mix they are messing around with Lakitu's farm. Koopa Troopas make their 3D debut in Super Mario 64, where they appear as rare enemies only found in Bob-omb Battlefield and Tiny-Huge Island. The red-shelled sunglasses-wearing style of Koopa Troopa was carried over to Paper Mario: The Thousand-Year Door as common enemies, despite Bowser not being the main antagonist of that game. Koopa Troopas reappear in Super Mario Bros.: The Lost Levels working exactly the same way as in the previous game.

The Blue Koopa Troopas appears in the multiplayer Ice stage, and when jumped on, they will turn into a Blue Shell which will turn Mario or Luigi into Shell Mario/Shell Luigi. This marks the first time an individual Koopa Troopa is given a name and differentiates from the species, as well as the first appearance of a Koopa Troopa who seems neutral to the battle between Mario and the Koopa Troop. An early script described them as "fierce-looking soldiers, half-human, with turtle-like armored shells on their backs, reptilian facial features and molded armor suits," and have "leathery skin, with turtle-like eyes and mouth."

As of August 1, 2018, he was made available to all players, although participants of the July 2018 online tournament could play as Koopa Troopa earlier. Koopa Troopa reappears in Mario Power Tennis as a playable character, where he is classified as speedy.

Koopa Troopas will try to get back into their shell if it is taken, and if they realize their shell has been lost, they express sadness for a moment and return to chasing Mario. A Koopa Troopa is one of seven fake Bowsers that serve as the bosses of the castles in the first seven worlds. Super Mario Maker 2 (2019)

There is a constellation of a Koopa Troopa's shell called "Speedy Shell," purchasable at the Museum for 50 Points. In this game, Koopa Troopas are shown to be quite resilient, as they have a fair defense (full damage can only be dealt once they are flipped onto their backs) and have the ability to withdraw into their shells and shoot themselves at their opponents. They are melee troopers, and attack by ramming into opponents in their shells. He is a lightweight character, although he is one of the heavier lightweights, meaning his speed and weight are slightly better than that of the lightest lightweights at the expense of acceleration, handling, and grip, making him more balanced.