About Tic-Tac-Toe
Classic X's and O's — challenge a friend or a strong, tactical AI.
How to play: Click / tap a square
Play Tic-Tac-Toe online for free in a modern browser. There is nothing to download, and an account is not required to start playing.
Rules and strategy
How to play Tic-Tac-Toe
Complete a row, column, or diagonal of three marks before your friend or the AI.
Start playing
- Choose a square by clicking or tapping it to place your mark.
- After the opponent moves, check both your possible winning lines and theirs.
- Win by making three in a row, or fill all nine squares for a draw.
Tic-Tac-Toe strategy tips
- Take the center when it is available because it belongs to four possible winning lines.
- Block any opponent line with two marks before building a non-winning line of your own.
- Create a fork by making two threats at once; one reply cannot block both.
Aegis Down
Meteor shards are raining on the last six crystal domes. Detonate lingering flak bursts that chain through the swarm — ammo is scarce, shells take time to fly, and the sky only gets meaner.
★ Featured Snake
The timeless classic — eat, grow, and don't bite your tail.
Chromapede
Blast a winding chroma-worm apart before it overruns your prism garden — every hit blooms into a crystal that bends the swarm. Chain same-colour shots for big multipliers, and watch out for the weaver and dive-bombing gnats.
Echo Loop
Four glowing pads sing an ever-growing melody — watch the loop, then echo it back before the tempo runs away. One spare Echo replays the tune; after that, a single slip breaks the loop.