Display screen or portion thereof with transitional graphical user interface

Description

This application is related to U.S. patent application Ser. No. 16/290,836, entitled “Controlling an Electronic Gaming Machine to Provide a Bonus Feature Opportunity,” to U.S. patent application Ser. No. 16/290,838, entitled “Digital Lobby and Multi-Game Metamorphics,” to U.S. patent application Ser. No. 16/290,833, entitled “Individual Metamorphic Linked Jackpots” and to U.S. patent application Ser. No. 29/682,178, entitled “Display Screen or Portion Thereof With Transitional Graphical User Interface,” all of which are being filed on the same day as the present application and all of which are hereby incorporated by reference and for all purposes.

FIG. 1 is a first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof; and,

FIG. 4 is the fourth image thereof.

The subject matter in this patent includes a process or period in which an image changes into another image. This process or period forms no part of the claimed design.

The dashed broken line in the perimeter of the drawings illustrates a display screen or portion thereof and forms no part of the claimed design. The dashed broken lines in the interior of the drawings illustrate portions of the transitional graphical user interface and form no part of the claimed design.

Claims

We claim the ornamental design for a display screen or portion thereof with transitional graphical user interface, as shown and described.