Part 2: Then Skyrim comes out taking up over 13 GB with DLC. This is reasonable considering the fact that it was way more expansive, graphically and gameplay-wise than most other games. Go forward 2 years and something changes. Battlefield 4 is 45 Gb, and CoD ghosts is 40!!! How did the size increase so exponentially in a period of 2 years?
Part 1: This stems from my last post: In 1999 the biggest game i know of was sytem shock 2. It was around 600 MB. In 2004 HL2 came out, taking a whopping 3.6 GB space. In 2006 TES oblivion (probably the most expansive game of all time at the time) came out. It is only 6.7 GB with all DLC.