Hydrophobia isn't a one-trick pony, but it only does one thing really well: water physics. The HydroEngine, created specifically for this game, attempts to simulate water behavior under, shall we say, unique circumstances. We all know that water can be a terrifying substance under the wrong circumstances, and Hydrophobia does a good job of prodding at those hidden fears primarily because of how good the water physics look. When a seemingly-stable wall gives way under the pressure of thousands upon thousands of gallons of water, you're going to freak out, even though you're only controlling protagonist Kate Wilson with your Xbox 360 controller. Apart from the HydroEngine effects, Hydrophobia looks nearly next-gen. The framerate is never locked down, and the environments never change enough to remain interesting. The Malthusian terrorist organization appears to be populated by masked, bald, dark-eyed, scowling clones.
If someone blindfolded me and asked me what Hydrophobia's soundtrack sounded like, I would be able to answer "Inferno Pool" within ten seconds. (For those who don't know, that was Dark Energy's last downloadable game.) It really starts to get uninteresting as you progress through the game's three short acts, but the game is over before it becomes too bothersome. The voicework is mediocre; Kate sounds like any other European heroine, but her Scottish buddy Scoot gets really annoying really fast. Not because of his accent, but because of his poorly-conceived and poorly-delivered one-liners. Malthusians sound even worse; they might as well run around screaming things like "I'm evil because my voice is DEEEEEEP!" Sound effects aren't great either; explosions sound canned, weapons sound like muffled toy guns, and not enough is done with the water.