[citation][nom]sandivin[/nom]So where are all the 64-bit games?[/citation]
there are some but they are not popular since it would mean blocking off most gamers,
you can do a 32 bit and 64 bit version of the game but it will cost more to make the game.
But there is still a benefit to 64 bit. you have access to more memory with out having to do the kernel hack, applications can also allocate more than 2 or 3GB of memory
a 64 bit compared to a 32 bit OS will allow you to do things like, install 8 or 16GB of memory, then launch a game that eats up 4GB of memory, then minimize it and open a program like photoshop and maya, do some work, then move the content to adobe aftereffects, and while it is scanning through the content, you can maximize the game and continue playing.
on a 32 bit OS this would work also but it will be really lag as windows starts using virtual memory.
PS 64 bit is needed if you are working with 1080p raw footage with a large number of layers, and it is 100% needed if you are working with RED 4k footage as a program like adobe aftereffects will need to allocate at least 4GB+ of memory just by it's self