Increases the resource costs of most recipes causing a marathon game. The will require the players to scale a larger factory and use rail to reach the end game.
Small changes concerning balance, gameplay, or graphics.
Were basic engines left untouched on purpose? I'm hesitant to think I'm the first one to notice after all this time?
See image: http://imgur.com/a/sglJZ
I'll update more if there is more, I figured I would start this thread now as....it might be a while if there is one. ;-)