From the review:
Despite Half-Life 2ís age, this giant of a game still impresses. Beautifully rendered models both create stunning landscapes and convey an incredibly claustrophobic world you canít help but rebel against. The outstanding dialogue draws you into the plot and characters. Those in authority sound like they enjoy their power, the friendly scientists sound lost in their intellectual wanderings, and the rebels gain your sympathy and make you want to fight for their cause. Half-Life 2ís unique inventiveness also sets it apart. Where other first-person shooters might immediately grant you a giant arsenal and tell you to shoot everything in sight, Half-Life 2 utilizes quieter strengths: good artificial intelligence, for example, great controls, a terrific physics engine, and pheromone-based pods that can summon a giant insect army to attack your enemies. The awesome gravity gun can draw objects to you and fire almost any object as a projectile--itís as much a tool as it is a weapon.