Experience the thrill of Reversi (a.k.a. Othello)! Challenge yourself against the AI engine on an 8x8 grid by flipping computer's pieces to conquer the board! This app is completely free and ad-free.

Game features
♦ Powerful game engine.
♦ Hint feature: the application will suggest next move for you.
♦ Undo last moves by pressing the back button.
♦ Gain experience points (XP) by earning game achievements (sign in is required).
♦ Compare your score against other players on the leaderboards (sign in is required).
♦ Import/export game on local and remote storage.
♦ Game engine performs multiple moves in case you have no valid place to go, due to the well known rule "If one player can not make a valid move, play passes back to the other player".

Main settings
♦ Level of difficulty, between 1 (easy) and 7 (difficult)
♦ Select player mode: application AI as white/black player or human vs. human mode
♦ Show/hide last move, show/hide valid moves, show/hide game animations
♦ Show emoticon (active only during last part of a game)
♦ Change color of game board
♦ Optional voice output and/or sound effects

Game rules
Each player must place a new piece in a position that there exists at least one straight (horizontal, vertical, or diagonal) line between the new piece and another piece of the same color, with one or more contiguous opposite pieces between them.

Black color starts first move. When player cannot move, the other player takes the turn. When neither players can move, the game ends. The winner is the player that owns more pieces.

Dear friends, consider that this app doesn't contain advertisements, in-app purchases, so this app will evolve depending on your positive ratings. Be positive, be nice :-)

IMPORTANT NOTE: To ensure fair competition, the application includes anti-cheating measures. For instance, a win will not be recorded on Google Play if the player changes the difficulty level mid-game, uses the undo function, loads an external transcript, or switches player mode during the match.

Permissions
This application requires the following permissions:
♢ INTERNET - to report application crashes and game related diagnostic information
♢ WRITE_EXTERNAL_STORAGE (aka Photos/Media/Files) - to import/export game on filesystem

Reversi - Othello