I borrowed the Orange Box from my friend and just started playing it today. I was wondering why Portal and HL2 are so similar when it comes to movement and picking up objects. Wasn't HL2 a game by it's self before it came to the Orange Box? Was it even originally an Xbox 360 game? It seems just a little bit old. And was Portal made to seem similar to HL2?
I'm just curious and I don't know anything...