オセロ - オンライン is an online multiplayer game that offers the ultimate Reversi experience. With a huge player base, this game allows players of all skill levels to engage in real-time battles using authentic rating rules.

As an official sponsor of the "World Othello Championship 2018," this game boasts the strongest AI opponent, HAYABUSA, who has previously battled on TV shows such as "Hokotate" and "Kis-My-Ft2 Battle ROBOT! 5 Match." Players have the opportunity to challenge this formidable AI for free.

In addition to the intense battles, players can also collect fun avatar items for free, enhancing their gaming experience. The game features a live commentary function, where an AI provides enjoyable insights and analysis. Furthermore, you can continue playing even when you're offline or in airplane mode.

Currently, the game is hosting thrilling elimination battles and monthly luxury prize events, which do not require any registration. Please note that this game is the official version of Othello, not Reversi.

Join the overwhelming number of players in オセロ - オンライン and experience the ultimate free online Reversi game!