UNJAM! - Who moves first?
Who moves first?
The board is jammed. Everyone wants out. Tap the Jammers in the right order and set them all free.
Free · Android 7.0+ · Works offline · No ads
How to play
One rule. 1000 puzzles.
Each Jammer can only leave in the direction it is facing, and only if its lane to the edge is clear. So the whole game is one question: who moves first?
Read the board
Arrows and eyes show where each Jammer wants to go. Find one with a clear path.
Tap to set it free
It winds up and dashes off, which opens lanes for the ones stuck behind it.
Mind the hearts
Tap a blocked Jammer and it bumps, scowls and costs a heart. You get 3 per level.
Try one
Only one of these can move.
Show the answer
The orange Jammer in the bottom-right corner, facing down. It is the only one whose lane to the edge is empty. Once it leaves, the red one above it can follow, and the board starts to open up.
Chapters
Ten themed chapters.
1000 levels, split into 10 chapters of 100. Every chapter repaints the whole game — the sky behind the board, the tray the board sits in, the Jammers and the accent colour. The rules never change, so a chapter is new scenery, not a new game.
Chapter 1 1–100
Twilight
Where it all begins
Chapter 2 101–200
Sunset
The sky turns warm
Chapter 3 201–300
Ocean
Deep and quiet
Chapter 4 301–400
Forest
Green and growing
Chapter 5 401–500
Candy
Sweet and sticky
Chapter 6 501–600
Midnight
Neon in the dark
Chapter 7 601–700
Desert
Sand and sun
Chapter 8 701–800
Aurora
Lights in the sky
Chapter 9 801–900
Volcano
Heat under the stone
Chapter 10 901–1000
Galaxy
The final stretch
Ocean, Candy and the very last board of Galaxy. Real screens, same rules, same solver.
Features
Small game. Properly made.
1000 proven-solvable levels
From a two-piece warm-up to packed 8×10 boards of 40-odd Jammers. A solver verifies every one, so there is always a way out.
10 themed chapters
Twilight, Sunset, Ocean, Galaxy and six more. Each repaints the sky, the board and the Jammers.
Fully offline
No internet permission at all. It plays the same on a plane as on your sofa.
No ads. No accounts.
Nothing to sign up for, nothing to buy, nothing interrupting the puzzle.
Three hearts, no timer
Think as long as you like. Only a wrong tap costs you, and hearts refill every level.
Phones and tablets
Runs on Android 7.0+ and scales cleanly from small phones to 10-inch tablets.
Screenshots
It starts easy. It does not stay easy.
FAQ
Good to know
How do you play UNJAM!?
Every Jammer on the board faces the direction it wants to leave in. Tap one: if nothing stands between it and the edge of the board, it zooms off. If another Jammer is in the way, it bumps into it and stays. Clear the whole board to finish the level.
What happens when I tap a blocked Jammer?
It costs one heart. You have 3 hearts per level; lose them all and the level restarts. Hearts refill every level, and there is no timer.
How many levels are there?
1000, in 10 chapters of 100. They start with two-piece boards that teach the rules without a tutorial and end with 8×10 boards that need real planning. Every level is checked by a solver, so none of them is impossible.
What are chapters?
Each chapter is 100 levels with its own look: Twilight, Sunset, Ocean and on to Galaxy. The background, the board, the Jammer colours and the accent colour all change. The rules never do — a chapter is a change of scenery, not of difficulty.
Do I have to play the chapters in order?
Levels unlock one by one, so you always have the next one waiting. The chapter picker lets you jump back to any level you have already reached.
Does it work offline?
Yes, completely. The Android app does not even request internet permission, so it cannot go online. Planes, tunnels and airplane mode are all fine.
Are there ads or in-app purchases?
No ads, no in-app purchases, no accounts and no sign-up.
Is it suitable for children?
The game has no ads, no chat, no links out, no purchases and collects no data, and the rules are simple enough for young players. The later levels will challenge adults too.
Where is my progress saved?
On your device only. If you use Android's built-in backup, your progress may be restored on a new phone by Android itself. You can wipe it any time with Reset Progress in the game's settings.
Which devices are supported?
Android 7.0 or newer, phones and tablets, in portrait orientation.
Something else? Visit Support or write to [email protected].