I doubt it'd be the guaranteed best seller you think. Most people spending a ton of money on video games weren't cognizant when HL2 came out. And those that wer

I doubt it'd be the guaranteed best seller you think. Most people spending a ton of money on video games weren't cognizant when HL2 came out. And those that were have been burned before/changed and would probably need to see raving reviews to be that interested. Portal 3 seems like the easy money grab. That had more lasting pop culture relevance, and "it's more Portal" would be enough for a bunch of people to buy it.