If "project games" count, both my collections fit this category.
First photo is my games at my Dad's game room:
1-1948 "United BabyFace" (woodrail EM)
2- 1974 Gottlieb "Sky Jump" (EM)
2a - 1974 Williams "Skylab" (EM)
3- 1989 Williams "Black Knight 2000" (solid state)
4- 1993 Data East "Lethal Weapon 3" (DMD)
Second and third pix (which is actually a 5 era collection!) are at my home game room:
1- 1943 Genco/P & S Machine "Paratroops" (flipperess, woodrail EM)--this is a project game.
2- 1976 Gottlieb "Target Alpha" (multi-player EM)
3- 1980 Gottlieb "Amazing Spiderman" (solid state)
4- 1993 Gottlieb "Gladiators" (DMD)
4a- 2012 Stern "Avengers" (color DMD)
5- 2016 Stern "Batman 66" (LCD display)
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