Applying Dupli-Objects Is it possible to bake dupliverts into one mesh for the BGE? (I have a large ground landscape that I use as the parent to duplicate trees, and the BGE doesn't support most modifiers.)
You can turn all the duplivert objects into real objects by selecting the object with dupliverts and choosing Object> Apply> Make Duplicates Real from the menu in the 3D view, or Ctrl+Shift+A .

Then select all the individual objects and press Ctrl+J to make them a single object.