I have my max_nexus set to 500 through the map editor. I believe that's the highest it goes.

However, I am wondering how it works, since when I run my game the actual memory usage is much higher than 500 MB, being closer to 1,000,000 - 1,200,000 KB

Is this really high for a game?

I would set the Max_Nexus lower, but occasionally I would get errors telling me it was not set high enough. Now I don't get those errors, but I'm wondering if there are some things I could do to reduce the memory usage that I have not thought of yet.

The biggest thing I did work on already was to change all my textures over to .dds format, which seemed to save a lot of memory. Are there other similar things you guys do to lower memory costs?