ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,196, issued on May 19, was assigned to Acres Technology (Las Vegas).

"Bonus with proximity of occurrence related to base game outcomes or payback percentage" was invented by John F. Acres (Las Vegas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Each play of a base game increases the likelihood of winning a bonus award. A display provides a graphical indication of the change in likelihood of winning the bonus award. In one aspect, the bonus award comprises the opportunity to play a secondary game. In another aspect, winning the bonus award may be based on payback percentage or outcomes of the base game. In yet another aspect, the timing of the next b...