# Reversi

> Flip discs to own the board.

Place a disc so it flips the other side's discs in a line, and take over the board. Climb a ladder of eight bots, from Pip to Onyx, play a friend on the same screen, or solve a new puzzle every day. Your character sits at the table and cheers every win.

- Play: https://sidekickarcade.com/play/reversi/ (in the browser, phone or computer, free, no sign-up)
- Neighborhood: [Tabletop Terrace](https://sidekickarcade.com/category/tabletop/index.md)
- Controls: Tap, click or arrow keys
- Best on: portrait screens
- Coins for goals: 2 per 1 stars, up to 10 a run

## How to play

1. Press or click a square that flips at least one of the other side's discs, and let go on it. On a keyboard, the arrow keys move the cursor and Enter places the disc.
2. A disc flips every line of the other side's discs it closes in. If you can't move, you pass. The game ends when neither side can move.
3. The side with more discs wins. Beat a bot to win stars: 1 on Pip, up to 5 on Onyx. Win twice on a bot to open the next one on the ladder.
4. Take back up to three moves a game with Undo. Each day has a new puzzle: find the one move that wins with perfect play. You get three tries.

## Tips

- A corner can never be flipped back, so take one whenever you can.
- Be careful with the squares next to a corner. They let the other side take the corner.
- More discs isn't always better in the middle of the game. Keep more moves open for you.
- The last few moves decide the game, so plan the end before you reach it.

## Questions

### Is it free?

Yes. It's free to play in your browser, with no download and no sign-up. Coins you earn are for fun and can never be bought.

### Can two people play?

Yes. Choose 2 players and take turns on the same phone, tablet or computer.

### How do I win?

Finish with more discs than the other side. The game ends when neither of you can move.

### How do I beat the top bot?

Onyx plays the endgame perfectly, so win earlier. Take the corners, keep your options open and don't give a corner away.

### Can I play on a phone or tablet?

Yes. It's built for touch first and plays the same on a phone, a tablet or a computer.

## Achievements

- **First move** (bronze, 10 coins): Finish your first game.
- **First win** (bronze, 10 coins): Beat Pip, the easiest bot.
- **Oops, take it back** (bronze, 10 coins): Use Undo in a game against a bot.
- **Pass the phone** (bronze, 10 coins): Play a game with a friend on one screen.
- **Puzzle time** (bronze, 10 coins): Solve a daily puzzle.
- **Corner stone** (bronze, 10 coins): Finish a game with a disc on a corner.
- **Even steven** (bronze, 10 coins): Play a game that ends in a draw.
- **Regular** (bronze, 15 coins): Play 10 games.
- **Getting steady** (silver, 25 coins): Beat Dot, the third bot.
- **No take-backs** (silver, 30 coins): Beat Ace without using Undo.
- **On a roll** (silver, 25 coins): Win 5 games in a row against Dot or a stronger bot.
- **Sharp eye** (silver, 30 coins): Solve 10 puzzles on the first try.
- **A week of puzzles** (silver, 40 coins): Solve a puzzle 7 days in a row.
- **Table regular** (silver, 40 coins): Play 50 games.
- **Rising player** (silver, 40 coins): Reach a rating of 1100.
- **Secret achievement** (silver, 25 coins): Keep playing to find it.
- **Ace beaten** (gold, 60 coins): Beat Ace, the hard bot.
- **Sage's respect** (gold, 80 coins): Beat Sage, a very hard bot.
- **Hot streak** (gold, 80 coins): Win 15 games in a row against Dot or a stronger bot.
- **A month of puzzles** (gold, 80 coins): Solve a puzzle 30 days in a row.
- **Star collector** (gold, 60 coins): Win 100 stars in total.
- **Sage regular** (gold, 60 coins): Beat Sage 10 times.
- **Strong player** (gold, 80 coins): Reach a rating of 1300.
- **Board regular** (gold, 60 coins): Play 200 games.
- **Onyx beaten** (diamond, 150 coins): Beat Onyx, the top bot. Earns the title "Board Boss".
- **Onyx regular** (diamond, 150 coins): Beat Onyx 25 times.
- **A hundred days of puzzles** (diamond, 150 coins): Solve a puzzle 100 days in a row. Earns the title "Puzzle Keeper".
- **A year of puzzles** (diamond, 150 coins): Solve 365 daily puzzles in total.
- **Master rating** (diamond, 150 coins): Reach a rating of 1500.

## More to play

- [Four in a Row](https://sidekickarcade.com/play/four-in-a-row/index.md): Drop discs to make four in a row. (Tabletop Terrace)
- [Checkers](https://sidekickarcade.com/play/checkers/index.md): Jump, crown and climb the bot ladder. (Tabletop Terrace)
- Tic-Tac-Toe (coming soon): Three in a row against a friend or a bot. (Tabletop Terrace)