What Does "Escalation" Mean on PS3? Context Needed

"Escalation" isn't a standard PS3 system term—it could refer to:

• Difficulty scaling: Games increasing challenge as you progress.
• Gameplay mechanic: A specific feature (e.g., enemy waves, threat levels) named "Escalation."
• Mode/Event: A limited-time mode or playlist.

To answer accurately, please specify:

• Which game?
• What context did you see "escalation" in?
• What information are you seeking?