I have a general Steam question. Can you get an alert on a specific game if it goes on sale? How?
Every few days Steam will pop an advert up with some offers in a half window.
Just now after exiting a game I saw two games for sale, one was Aliens: Colonial Marines. It wasn't on sale per se since it isn't out yet, but it has a pre-order phat loot of some kind of special weapon.
You can also hit their store and they'll typically let you know if something is discounted.