Basically, it's a small city. You can *deep breath* do missions, join a triad, have gang wars, rob other players/shops/banks/triads, buy an apartment then furnish it, get in trouble with cops, buy augmentations/weapons/stuff and get more powerful, explore the city (main city (in 3 chunks), slums, abandoned slums and China town) and so on. The map is geographically huge and the mod brings a lot of new features to DXMP. In all, it's a new experience and pretty fun.