Lucid Reversi

Lucid Reversi is a clean, fast game of Reversi (Othello) you can start in one tap. A crisp board, large black and white stones, and clear placement and flip feedback keep your next move readable even on a small screen.

[Who it is for]
- Players who want rules they can learn in five minutes and depth that lasts
- Anyone who likes finishing a full game in a short break
- Solo play, or two people sharing one device, with no connection required

[Features]
- AI matches across four levels: Beginner, Easy, Medium, Hard
- Local 2-player pass and play on a single device
- Standard and Anti rules, where holding the fewest stones wins instead
- Three board sizes: 6x6, 8x8, and 10x10
- Puzzle challenges: three set positions, each with its own goal
- Undo and hints when you want to take a move back or find the next one
- Legal moves are highlighted, so first-time players can start right away
- Five board themes and four stone themes: Classic, Arctic, Ember, Forest, Sakura
- Your game in progress is saved automatically
- Available in English, Korean, and Japanese

[Comfortable to read and hear]
- High contrast colors and reduced motion
- Text size at 100%, 115%, or 130%
- Separate toggles for sound, music, and vibration
- Board coordinates and flipped stone counts
- A how-to-play guide is built into the game

[How Reversi works]
The game opens with two black and two white stones crossed in the center. Place a stone so it brackets your opponent's line between your own, and every stone in between flips to your color. If a square flips nothing, you cannot play there; when you have no legal move, your turn passes. The game ends when the board fills or neither side can move, and whoever holds more stones wins.

Corners can never be flipped, which makes them the decisive squares. Flipping the most stones on a single move is rarely the strongest play; limiting where your opponent can go usually matters more. Anti rules invert that calculation entirely and ask for a different kind of reading.

No account, no login, and no connection needed to play.