Play 逆転オセロニア on PC Play 逆転オセロニア on PC and Mac

About the Game

Reversal Othellonia reimagines the familiar logic of Othello as a full-blooded competitive battle experience, built around the intoxicating thrill of fighting back from behind. Rather than simply counting tiles, players are engaged in real-time head-to-head duels where the objective is to reduce the opponent's HP to zero. Each piece placed on the board represents a character with its own skill set, and sandwiching an enemy piece to flip it is both a tactical board move and a direct source of damage. The result is a game where every turn carries weight and a seemingly hopeless position can transform into a dominant lead in just a few well-timed plays.
At the heart of the experience is a deep deck-building system. Players assemble teams from a wide roster of characters, each carrying skills that interact with the board and the opponent in different ways. The skill categories include:
Attack Boost: amplifies outgoing damage on specific flip combinations
Defense and Healing: sustains your HP through prolonged exchanges
Curse and Poison: applies persistent pressure that chips away at the opponent over time
Traps: plants hidden effects that trigger when the opponent flips those squares
Pierce: bypasses certain defensive setups to land direct damage
Building a deck is not just about stacking power. It is about understanding how skills chain together and anticipating the kinds of boards that will emerge against different opponent strategies. Mastering that interplay between piece placement and skill activation is what separates casual players from serious competitors.
The competitive structure of Reversal Othellonia is designed to keep players engaged across many different timelines and goals. Season Matches run as ongoing ranked ladders where players accumulate points and fight to climb toward the prestigious Diamond Master tier. These matches reward consistency and improvement over time. Cup Matches operate differently, offering a shorter burst format with a fixed number of battles and a strict time window, which creates a high-stakes atmosphere where every game matters far more. The Coliseum provides a parallel track of event-driven battles that rotate regularly, ensuring that even players who prefer structured challenges over open ranked play always have a meaningful objective to pursue.
Social interaction is woven into the battle system through a stamp feature. During a match, players can send animated stamps to their opponents to react to what is happening on the board. Whether it is encouragement after a clever play, a lighthearted taunt following a big comeback, or a simple greeting at the start of a session, these stamps add a human dimension to what could otherwise feel like a purely mechanical competition.
The production values supporting all of this gameplay are notable. A wide cast of professional voice actors lends personality to the characters, with recognizable names such as Kana Hanazawa, Miyuki Sawashiro, Ryuichi Kijima, Kotori Koiwai, Juri Kimura, and Ayaka Ohashi contributing to the roster alongside many others. Their performances add energy to every battle and give individual characters a sense of identity beyond their skill stats.
For players who want to take their Reversal Othellonia sessions to the next level, running the game on PC through MuMuPlayer is a practical and effective choice. The expanded screen real estate makes reading the full board significantly easier, which is a genuine advantage when evaluating flip sequences several moves ahead. Mouse-based input provides a level of placement accuracy that touchscreen play cannot always guarantee in tight moments. Consistent system performance also means that ranked sessions, Coliseum events, and Cup Matches can run from start to finish without the interruptions that come from mobile battery limits or device heat buildup. For a game where momentum and focus are everything, those are advantages worth having.