sorry is this is the wrong forum guys/girls. the question i have is - are 64bit games harder to program - i know having games programmed to make full use of dual cores is a very difficult, but is writing the games in 64 bit as opposed to 32 much more difficult. the reason i ask is that for the newer games coming out - Rome II and later, most require sufficiently powerfull cpus to run them, and these are already 64bit capable, ie Athlon XP with no SSE2 - no good, much older pentiums etc. And if thats the case - why aren't game programmers making use of what i thought would be a free speed increase by programming in 64bit code - make the games run better on lower spec'd pcs = greater customer base. Or do you need to run a 64bit OS to run a 64 bit game? As you can tell i have NO knowledge in this area at all - i was just curious.