I'd just like to point that intending to use all you game data over the course of the program execution is quite different from using all your game data *all the time*. Whatever smart a virtual memory system can be, it would be interesting to look at how well on demand paging and such mecanisms perform compared to explicitely loading and unloading the data you need. [edit]simply put: no, such a packer is probably not useless[/edit]