Play Reversi online with cats and pups

Nap & Yap is a free online version of Reversi, the classic strategy board game also known as Othello. Every piece is a sleepy cat on one side and a yappy pup on the other. Trap a line of the other team and they all wake up on your side with a meow or a woof.

Play against the computer at three levels, or send a friend a link and play together in real time. There's nothing to download and no account to make, and it works on phones, tablets and computers.

How to play Reversi

The game starts with two cats and two pups in the middle of an 8×8 quilt. Cats move first.
On your turn, place a pet next to the other team so that a straight line of their pets (across, down or diagonal) is sandwiched between your new pet and one you already have.
Every pet in that line flips over and joins your team. One move can flip several lines at once.
If you can't make a move, you pass. The game ends when neither side can move.
The team with the most pets on the board wins.

Tips to win at Reversi

Take the corners. A pet on a corner cushion can never be flipped back.
Avoid the squares next to an empty corner. They tend to hand the corner to your opponent.
Don't grab too many pets early. Having more moves available matters more than having more pets in the middle of the game.
Edges are strong, but only when they're safe. A pet on the edge is harder to flip.

Questions

Is Nap & Yap free?: Yes. It's free to play, with no ads and no sign-up.
Is this the same as Othello?: It uses the standard Reversi rules that Othello is based on: an 8×8 board, four pieces to start, and flipping by sandwiching lines.
Can I play against the computer?: Yes. Easy is a playful beginner, Normal thinks a move ahead, and Expert plans deep and plays the endgame perfectly.
How do I play with a friend?: Choose "Play a friend" to get a link. When your friend opens it, they take the other side.

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