In Containment, both teams must fight to keep Coolant Nodes under their control, whoever holds the most for the longest wins (similar to Meltdown from Resistance: Fall of Man) This game mode was only featured in Resistance: Retribution.

Resistance Multiplayer Game Modes
Resistance: Fall of Man Deathmatch | Team Deathmatch | Capture the Flag | Meltdown | Assault | Breach | Skirmish
Resistance 2 Deathmatch | Team Deathmatch | Core Control | Meltdown | Skirmish
Resistance: Retribution Deathmatch | Team Deathmatch | Containment | Capture the Flag | Assimilation
Resistance 3 Team Deathmatch | Chain Reaction | Deathmatch | Breach | Capture the Flag | War Games | Invasion
Resistance: Burning Skies Deathmatch | Team Deathmatch | Survival