Normally, it has two different type, the upright version and table version. For the upright version, it is standing on the floor during play and the machine height is more than the width. The screen also at an angle to the ground but not parallel.
And most of clients will stand to play. Do the table version, the machine width is longer than the height. The screen is parallel with the floor. And normally for this version game machine, it is seat down to play.
The game machine are assembly by the outside cabinet and inside main board and parts. For the upright arcade games, it is included the topper, screen area, play area, side board, main body and backside board.