Swipe to connect
Drag across touching tiles in any direction — sideways, up, down, or diagonally — to build a path of numbers.
Free number puzzle · Ages 10+
Connect the numbers,
Connect the numbers,
master the math.
Connect+ turns mental math into a game you can’t put down. Trace a path of numbers that adds up to the tile you land on, double it, and chase your best score. Playful for kids, clever enough for the whole family.
No sign-up · Plays offline · No forced ads
The idea
One simple rule, endless puzzles
Every path you trace is a tiny arithmetic puzzle. The numbers you cross must add up to the number you finish on — then that tile doubles and your score climbs.
Make the sum
The tiles you cross must add up to the value of the tile you land on. Land on a 5 with a 2 and a 3, and the move is valid.
Double & score
Your destination tile doubles and stays put, the tiles you used refresh with new numbers, and your score jumps.
Keep the board alive
Plan ahead so you always have a move. When no valid paths remain, the round ends — how high can you push your best?
Why kids love it
Learning that doesn’t feel like homework
Bright, tactile, and quick to pick up — Connect+ makes practicing numbers something kids actually want to do.
🎯 Fun learning
Mental addition sneaks in through play — no worksheets, no pressure.
⚡ Fast rounds
A satisfying puzzle fits into a few minutes, perfect for short attention spans.
🌈 Colorful design
Chunky, rounded tiles and playful color make every move feel great.
🧠 Brain exercise
Adding, planning, and spotting patterns keep young minds engaged.
🔢 Number recognition
Repeated, low-stakes practice builds comfort and confidence with numbers.
🧩 Pattern discovery
Kids learn to see combinations and routes across the board.
👨👩👧 Family friendly
Simple enough for kids, moreish enough that grown-ups steal a turn.
For parents · Research-based
What the research actually says
We keep our claims honest. Below is what studies show about the skills Connect+ exercises — with a clear line between what’s well established and what’s still emerging.
What research says
Practice makes you better — at what you practice
Reviews of “brain-training” find people reliably improve at the tasks they train on, with limited spread to unrelated abilities. So a number game is best seen as practice for number thinking, not a shortcut to general smarts.1,2
Kids’ thinking skills are genuinely trainable
Planning, focus, and mental flexibility (“executive functions”) can improve in childhood through activities that repeatedly and progressively challenge them — though benefits tend to be specific to what’s practiced.3
Mental-math fluency is built by doing
Fast, accurate mental calculation comes from repeated retrieval practice, and strong arithmetic fluency is linked to later success with fractions, algebra, and word problems.4
Spatial reasoning improves with practice — most in children
A meta-analysis of 217 studies found practice improves spatial skills, with the largest, durable gains in children under 13.5
Math games can help — modestly
Digital math practice can improve math performance for some children, but the effect is moderate and generally no better than other good practice tools. Helpful, not magic.6
Attention grows with age
Sustained attention naturally improves from around age 10 through the mid-teens as part of normal development — a game meets kids where they are rather than accelerating this.7
How Connect+ fits in
🧮 Mental addition, repeated
Every valid path means adding tiles in your head — the kind of retrieval practice linked to arithmetic fluency. (A game supplements teaching; it doesn’t replace it.)
🧩 Finding & following paths
Scanning the grid for connected routes gives playful practice with pattern-finding and spatial thinking.
🗺️ Planning ahead
Choosing a route and backtracking when it won’t work engages planning, working memory, and flexibility.
🧘 No time pressure
Without a timer, kids can sustain attention and think a move through instead of rushing.
An honest note. Connect+ is designed to be a fun way to practice mental math, pattern-finding, and planning. The research we reference studies these underlying skills in general — not this specific game — and scientists agree the benefits of any single puzzle tend to be specific to the kind of thinking it involves. Connect+ is a game, not an educational program or a medical device, and it is not a substitute for schoolwork, teaching, or professional advice.
References
- Simons, D. J., et al. (2016). Do “Brain-Training” Programs Work? Psychological Science in the Public Interest, 17(3). Link
- Owen, A. M., et al. (2010). Putting brain training to the test. Nature, 465. Link
- Diamond, A., & Lee, K. (2011). Interventions Shown to Aid Executive Function Development in Children 4 to 12. Science, 333. Link
- McNeil, N. M., et al. (2025). What the Science of Learning Teaches Us About Arithmetic Fluency. Psychological Science in the Public Interest, 26(1). Link
- Uttal, D. H., et al. (2013). The Malleability of Spatial Skills: A Meta-Analysis of Training Studies. Psychological Bulletin, 139(2). Link
- Benavides-Varela, S., et al. (2020). Effectiveness of digital-based interventions for children with mathematical learning difficulties. Computers & Education, 157. Link
- Sustaining attention in affective contexts during adolescence (2024). Cognition and Emotion. Link — cited for the developmental timeline of sustained attention.
Features
Built to be played, not to nag
📴 Offline play
Loads once, then plays anywhere — the puzzle itself never needs a connection. Only the leaderboard does.
♾️ Endless puzzles
Boards are generated on the fly, so you never run out.
🔗 Connects & hints
Earn connects as you score, then spend them on a hint that highlights the best move.
🏆 Personal bests
Track your high score, biggest tile, and longest swipe.
🎨 Themes
Pick accent colors and tile palettes, with light and dark modes.
🔊 Playful sound
Tactile audio cues you can toggle off any time.
⏳ No time pressure
Think as long as you like — it’s a puzzle, not a race.
👶 Family friendly
Designed for ages 10+, with a child-safe ad and consent setup.
💾 Auto-save
Close and reopen — your game is exactly where you left it.
📅 Daily challenge
A fresh objective every day, and a streak that grows as long as you keep meeting it.
🌍 Global leaderboard
Opt in to see where your best lands against everyone else’s — all-time and today. Play under a random handle or a name you pick.
📤 Share your board
Turn a finished run into an image — final board, score, and stats — and send it wherever you like.
📜 Move history
On a tablet-sized screen or larger, the Play panel keeps a running list of your recent moves and what each one scored.
❓ Help when you need it
A ? in the header explains the rule with a worked example — and it opens by itself on your first game.
Take a look
Bright, tactile, and easy on the eyes
How to play
You’ll get it in one move
- 1
Pick a starting tile
Press any number on the 4×4 board to begin your path.
- 2
Swipe across neighbors
Drag to touching tiles in any direction, adding their values as you go.
- 3
Land on the sum
Finish on a tile equal to the total of the tiles you crossed.
- 4
Double and repeat
That tile doubles, your score grows, and a fresh puzzle appears.
FAQ
Questions parents ask
Is Connect+ free to play?
Yes. Connect+ is free in your browser and on Android. It’s supported by optional rewarded ads you can choose to watch for extra connects — never forced ads.
Does it work offline?
Once loaded, the puzzle itself plays fully offline. Progress is saved on your device, so you can play without a connection. Two optional extras do need one: the global leaderboard and the rewarded ads.
Is it suitable for children?
Yes — it’s designed for ages 10+ and is family-friendly. Ads are configured as non-personalized and child-directed, and a privacy-consent step runs before any ad is requested.
How do connects and hints work?
Connects are your in-game currency for hints. You start with 3,000 and earn +100 for every 1,000 points you score — or +3,000 by watching a rewarded ad. A hint costs 1,000 connects and reveals the best available move. Your connects carry over between games.
Are there advertisements?
Only optional rewarded videos you choose to watch in exchange for connects. No ads interrupt your play, and they’re non-personalized.
Is my progress saved?
Yes. Your board, score, and best records are saved locally and restored automatically next time you open the game. The one exception is the optional global leaderboard — if you choose to join it, your score and display name are stored on Google Firebase so other players can see the rankings. See our Privacy Policy.
Can I play on desktop?
Yes. Connect+ plays right in your browser on desktop, tablet, and mobile, with the same gameplay whether you use a mouse or touch. On a tablet-sized screen or larger, the Play and Game Over screens spread into two columns rather than staying in a narrow phone-width strip.
Is there a daily challenge or a leaderboard?
Both. A daily challenge sets a new objective each day and tracks your streak. The global leaderboard is optional and off until you tap Join; it has an all-time board and a daily one, and you can play under a randomly generated handle or a display name you choose.
Loved by players
What families are saying
Illustrative reviews shown during launch.
★★★★★
“My 11-year-old asks to play this instead of watching videos. He doesn’t even notice he’s doing mental math.”
★★★★★
“Dangerously addictive in the best way. The ‘just one more’ loop is so clean, and there’s no timer stressing you out.”
★★★★★
“I use it as a quick warm-up with my class. Kids love beating their best swipe, and it sparks great number talk.”
Ready to play?
Start connecting numbers in seconds
No sign-up, no download required to start. Play instantly in your browser, or get it on your phone.
The APK is for direct install on Android. You may need to allow installs from your browser in Settings → Apps → Special access.