Are the units in this set used in all versions of the game ? Like during scenarios as well as pick up skirmish's ? Do they get placed over exsisting tiles that correspond to the type of tree/column ? Or are they meant to be placed just anywhere to provide more eye candy or decoration so to speak ? Thanx !
They are usable eyecandy. Every tree and every individual column on the board gives a terrain effect. There are plastic columns and cardboard trees in the base game along with tokens for special omphalos. This add on does nothing for gameplay but it does some for aesthetics.