Othello’s setback mostly provided by Iago, principally

• with black-and-white disks
• Classic game with black-and-white discs
• Game involving turning over captured pieces
• Othello's other name
• Game on an 8 x 8 board
• Game that comes with a lot of discs
• Strategy game with disks

Wikipedia Word definitions in Wikipedia
Reversi is a strategy board game for two players, played on an 8×8 uncheckered board. There are sixty-four identical game pieces called disks (often spelled "discs"), which are light on one side and dark on the other. Players take turns placing disks on ...

Wiktionary Word definitions in Wiktionary
n. 1 A strategy game for two players, areas of the board being captured by surrounding rows of the opponent's pieces with one's own. 2 The card game reversis.