Half Life 2: Dominion

The Outer Wall Checkpoint is the only authorized exit through City 23’s towering perimeter barrier—concrete walls topped with energy fencing stretching in both directions to seal off the wasteland. Multiple security layers include scanning gates, biometric stations, and automated turrets lining the approach. Civil Protection Elite Units patrol constantly, supported by watchtowers with searchlights and sniper nests. Only citizens with rare special clearance may approach; most applications are denied. Combine vehicles pass through dedicated lanes under strict inspection. Inside, detention cells hold those caught attempting unauthorized crossings. Multilingual warning signs detail severe penalties, while propaganda screens portray City 23’s “security” against the chaos beyond.