To Every Person that is afraid that 4 GB RAM or even 2 GB or RAM will crash the game in the 64 Bit version Calm down! nothing will happen, It's normally that the 64 bit version is MAYBE a little more buggy in the beginning. Nobody says it will. (This is because you need other program libarys in 64 bit etc.) And even when you have 2 GB of RAM you can start the 64 bit version and it will work like when you have 4 or even 6 GB of ram (just you don't have the space but it will work) The only differnce between 32 and 64 bit is a amount of Space that can be addressed Image it like post codes, when you have too much citys for 4 Numbers you switch to 5! even when you have 5 Numbers in the post codes and you have online enough Cities for 3 Numbers 5 will also work I hope this helps all the People that are worried about that when you have online 4 GB of RAM will crash your game in 64 bit But! when you have a 32 bit Operational System (like Windows XP or something^^) then you can't start the 64 bit version!