Digital Foundry: PS4 KILLZONE uses 3GB RAM! (CONFIRMED)

[Pemalite]

zarx said:

The first Deus Ex from 2000 had RPG elements and it wasn't the first FPS to include them. Tom Clancy's Rainbow Six: Vegas had 3rd person view while in cover back in 2006. 

You can go farther back than Deus Ex and look at System Shock.

As for branching dialog tree's... Look at anything made by Black Isle studios in the 90's, in-fact everything he listed has been done before to great effect in other games 10-20 years ago.