Alpha Protocol has some pretty wonky design decisions. It's like it was a game that tried to test out new stuff, but wanted to throw in some outdated gameplay decisions as well. Overall it's not a bad game, but its bad points really drag it down to mediocre in my book.
My biggest problem is the combat. In order to have any decent chance of hitting something, you have to hold still and maintain your sights on the target for a few seconds, a la Deus Ex 1. Holding it beyond that will give you a critical hit. If you like how this slow combat down and creates a risk and reward relationship, then this isn't such a big deal. If you're more of an action-y type person, this is a major downer. In either case it slows combat down a lot and punishes you pretty harshly for doing cool things typical of the spy genre, such as running and gunning.
Another problem is with the non-combat encounters. All conversations are on a timer. You must listen to the person's dialogue and choose a response within the allotted amount of time. This sounds great on paper, but in practice they rarely give you more than a couple of seconds after the person has finished their sentence to respond, and sometimes even less than that. It's frustrating when your character automatically suddenly starts popping dumb jokes when you wanted to play a professional spy.
The AI is also intentionally set up to be mind-numbingly dumb, sometimes intentionally. There are several occasions where you'll sneak up on a guy who's doing nothing but staring at a featureless wall. Other times, you'll be in a fire fight and one of your enemies will be "behind cover" with their head and shoulders sticking out. I recommend playing the game on hard for this reason, but be warned: Hard is hard in this game.
Other than that, the plot is mildly interesting. I haven't gotten too far with it, but after the fairly nonsensical beginning it seems to smooth out. You get a sense of progression with the skills you unlock, and a number of them can be combined to tear people to shreds and aid in stealth. You get a very strong sense of what you're developing your character for. Guns are also diverse, customizable, and fill a variety of niches (Even though assault rifles
only fire in bursts).
So, overall a fair game that got hurt by some risky design decisions. Your mileage may vary, of course, but I think $5 is fair.
As for AI War, I have all but the very newest expansion, and never ever play it. I tried it when I got it, but it didn't seem particularly fun for whatever reason.
Same here. I launched the tutorial, got bored, and haven't touched it since.