Quoted from toyotaboy:T2 may be the first standard sized DMD?
In Mr.Pin guide again... WMS prior game was BOP - not DMD. Party Zone, under the Bally name has full size DMD. Production date 8/91 (one month after T2.) Looks like Gottlieb was late to the change with the monstrosity that is Super Mario Brothers 5/92. Can't imagine anybody else involved in the battle but feel free to educate if anybody knows otherwise. T2 first "regular" DMD as far as we know over here.