We claim the ornamental design for a game playing surface for poker, as shown and described.
FIG. 1 is a plan view of a game play surface for poker in accordance with the present design. For example, the game play surface can be a gaming table surface; and,
FIG, 2 is an enlarged plan view of an individual player position of the gaming table for poker in accordance with the present design shown in FIG. 1.
In the drawings, the broken lines depict environmental subiect matter only and form no part of the claimed design.