ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,312, issued on March 31, was assigned to IGT (Las Vegas).

"Endless game with novel storyline" was invented by Soheil Latifi (Moncton, Canada), David Froy (Lakeville-Westmorland, Canada), Sven Aurich (Schwanberg, Austria) and Stefan Keilwert (St. Josef, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure will be described in connection with an electronic game such as slots, video poker, or other such game. The game can provide a unique, dynamic storyline. For example, a storyline can be presented through graphical or other visual indicators that appear during game play, e.g. symbols or other game elements. Th...