You hold half the clues. Your partner holds the other half.
Team Mind Challenge is an online puzzle game for 2 or 4 players. Each player sees different clues, so you only crack it by telling each other what you see.
Plays in your phone or laptop browser. No ads.
Try it: open the vault
The code is an even number from 1 to 9.
The code is greater than 6.
What's the code?
The fun is in the conversation
Nobody wins alone
Clues are split across players. One holds the rules, another holds the map, another holds the key.
Talking is part of the game
Text and voice chat are built in. The best explainer is often more useful than the fastest calculator.
Relaxed or racing, your call
Casual mode has no penalties and no rush — great for couples and families. Competitive mode has 6 levels and leaderboards.
Rarely the same puzzle twice
There are 25 challenge types and hundreds of puzzles, words, and questions. The ones you have played are held back so they don’t return too soon.
25 challenge types in 10 categories
Games marked 🎉 are party games: perfect as a warm-up or to play with your partner.
🧠 Logic & Brain Challenge
- Symbol Vault Code
- Split Number Pattern
- Secret Number
🕵️ Mystery & Investigation
- Whodunit?
- Secret Cipher
🧩 Memory & Concentration
- Colour Sequence
- Memory Map
- Memory Pairs
➗ Mathematical Intelligence
- Calculation Chain
- Symbol Equations
🧭 Maze & Navigation
- Blind Maze
⚙️ Engineering & Problem Solving
- Energy Pipe Network
- Emergency Switch Panel
♟️ Strategy Challenge
- Energy Distribution
- Mission Priority
🤝 Teamwork & Coordination
- Synced Levers
- One Mind
- How Well Do You Know Me?
- Forbidden Words
- Rhythm Buttons
👁️ Visual Intelligence
- Emoji Riddle
- Draw & Guess
- Spot the Difference
- Shape Rotation
👑 Ultimate Challenge
- Ultimate Vault
How to play
Invite a friend or find a team
Create a room and share its code, or tap “Play now” to be matched with other players.
Look at your own card
Every player gets a different piece of information. You can’t see your partner’s card.
Talk it through and solve it
Explain what you see by chat or voice, then send the team’s answer before time runs out.
How it differs from other brain games
- Made to be played together. Most brain games are solo. Here every puzzle is split on purpose so you have to work as a team.
- No ads and no paying to win. There are no ads between rounds and no paid items that give one team an edge.
- Nothing to install. Open it in your phone or laptop browser and play. You can also add it to your home screen like an app.
- Two languages. Every puzzle is available in English and Indonesian, so you can play with friends abroad.
Security and your personal data
We only keep the data needed to run the game and keep your account safe. Here is what we promise and how we keep each promise.
- Passwords
- Stored as a one-way scrypt hash. Not even our team can see your password.
- Used only for confirming your account, password reset links, and security alerts. Never shown to other players and never used for promotions.
- Signed-in devices
- See and sign out any device from Settings. Changing or resetting your password signs out every other device.
- Two-step verification
- Turn it on with an authenticator app on your phone. Admin accounts must use it.
- Chat and voice
- Chat messages are not saved to a database and disappear when the room closes. Voice is relayed live to your team and never recorded.
- Playing with strangers
- Bad words are masked automatically. In random rooms, phone numbers, emails, and links are hidden. Players can be blocked and reported with one tap.
- No trackers
- No ads and no third-party analytics SDKs. IP addresses are used only briefly to prevent abuse and are not stored in the database.
- Delete any time
- Delete your account and its data permanently from the app or the web page, without contacting anyone.
Does it slow down when lots of people play?
The game uses a realtime connection (WebSocket), so answers, chat, and voice arrive instantly without reloading the page. We tested it with 1,500 bot players at once, complete with chat, answers, and voice chat. Here are the results.
| Players at once | Matches | With voice | Typical response | 95% of responses under | CPU load (1 core) | Server memory |
|---|---|---|---|---|---|---|
| 100 | 50 | 20 | <1 ms | 1 ms | 5% | 191 MB |
| 600 | 300 | 120 | <1 ms | 1 ms | 19% | 238 MB |
| 1,000 | 500 | 200 | <1 ms | 1 ms | 29% | 247 MB |
| 1,500 | 750 | 300 | <1 ms | 3 ms | 41% | 251 MB |
Tested 5 November 2026 on a 2-core server (Intel Xeon 2.8 GHz, 8 GB RAM) with PostgreSQL and Redis, with the server and database on the same machine. Response times above are processing time on the server; the internet trip from your phone to the server comes on top (typically 20–80 ms). When the server updates, matches in progress are allowed to finish first.
FAQ
Is it free?
Yes. Every mode and every challenge is free to play, with no ads.
Do I need to install an app?
No. Open it in your browser and sign up. On a phone you can choose “Add to Home screen” so it opens like an app. An Android version for Google Play is on the way.
Can I play alone?
Yes, in Practice mode you can try every challenge type. But the fun really starts with 2 or 4 players.
How long is a match?
Casual mode has 4 challenges, about 5–10 minutes. Competitive matches get longer at higher levels.
What if my connection drops mid-game?
The game reconnects by itself. The match waits up to 90 seconds so you can pick up where you left off.
Forgot your password?
Tap “Forgot password?” on the sign-in page. A link to choose a new password is sent to your account email.
What is the minimum age?
13, because there is chat and voice chat with other players.
Who will be your first partner?
Signing up takes a minute. Send the room code to your partner, best friend, or family and see how in sync you are.
Play free now