How can I connect loose edges? I'm making a model for a voxel style game. I've modeled it in Qubicle and exported it to Blender for the animations. But in my mesh most of the faces or edges are not connected, and I can't find a way for doing it so. That is affecting the mesh light in Unity.



I've tried with the simple Ctrl while dragging, but that does not connect it. I've also tried putting new vertices and merging both. But the mesh and the UV maps (directly imported from Qubicle) keeps distorting.



I don't understand why it's so hard in a so basic mesh. Is there a simple way to do it. I'm desperate, please help!
You need to use Remove Doubles.
 In Edit Mode, press  A  once or twice to select all vertices, then Ctrl +  V  and choose Remove Doubles, this will weld all vertices sharing same location.