The Trophy System excels in objective-based game modes such as Domination or Demolition, although mostly in Drop Zone due to excessive explosive weaponry and explosive based pointstreaks. The Trophy System can protect a player while they attempt to secure the objective.
The Trophy System is most effective when positioned in front of the player while in the prone position. This allows most projectiles to be destroyed without damaging the player.
The Trophy System appears in Call of Duty: Black Ops II, featuring a smaller and more compact model. Like its Call of Duty: Modern Warfare 3 counterpart, it can destroy two projectiles at a time before destroying itself. But unlike in Call of Duty: Modern Warfare 3, it can be tossed ahead of the player, in case there may be projectiles incoming in front of them. The Trophy System can intercept a wide range of enemy projectiles, including all lethals, all tacticals (even other Trophy Systems), Rocket Launcher missiles and Grenade Launcher grenades, and various scorestreaks. Players will receive 25 score towards their scorestreak for every projectile destroyed with the Trophy System.
The Trophy System returns in multiplayer mode, where it acts the same as the previous versions. It can destory two incoming projectiles (not including bullets), such as grenades or missiles. Like in Call of Duty: Modern Warfare 3, this is great for Drop Zone, where you may have a lot of enemies throwing grenades at the current drop zone. The Night Owl pointstreak comes with an integral Trophy System.
"Destroys incoming enemy projectiles within 10 meters. Vehicle missiles have a chance to penetrate."
— In-game description.
The Trophy System returns to Call of Duty: Black Ops III. It functions exactly the same as in Call of Duty: Black Ops II, being able to destroy incoming enemy projectiles (including Combat Axes) and able to be tossed rather than planted. When thrown, it rolls, giving it slightly more distance and delaying its deployment.
"Deployable autonomous defense system that destroys up to three nearby pieces of equipment and projectiles."
— In-game description
The Trophy System appears in Call of Duty: Modern Warfare as a Field Upgrade. It behaves similarly to its past incarnations, but has a smaller size and is thrown ahead when deployed like the Black Ops II version, and can intercept up to three explosives instead of two.
Due to the Trophy System's shotgun-like method of destroying projectiles, enemies or the player who deployed the system itself can be hurt if the Trophy System's shot is coincidentally intercepted by a player. This will usually cause significant if not fatal damage to the recipient of the shot, since the majority of the pellets in that shot will hit that player. This is easily seen when the Trophy System is next to an enemy deploying a Tactical Insertion, since, once deployed, the enemy will be standing right on top of the Insertion, and the enemy will be shot in the feet by the Trophy System.
A Trophy System is capable of destroying enemy Semtex or explosive Crossbow bolts that have stuck to friendly players, including the player that deployed the Trophy System. Before Black Ops III introduced the Glitch ability, this was the only reliable method for a regular player to survive being stuck by such weapons.