If you set X,Y,Z face to 0 and All face parameter to 1 you can see all face of cube...
A little knowledge about 3d perspective projection X,Y,Z ... you can build 3d like world ..( wolfenstein)..
You can use 2.5d platformer or 3d Cube fx, this last can just use 1 same picture for all faces..
So ... X Y and (Z is the deep of the 3d world ) ... however collision must be adapted...
Finally with some test and a bit work you can make nice pseudo 3d like game...
Good luck ....