Free games like Rush Hour and Unblock Me
Unjam in the Letternerd Arcade is a free game like Rush Hour, Unblock Me and parking jam puzzles: slide the blocks out of the way to free the red one, in as few moves as you can. Solve one and a harder jam follows. It runs in any browser, and the daily board lets you compare scores with friends.
What is Rush Hour?
Rush Hour is a sliding-block puzzle invented by Nob Yoshigahara and made by ThinkFun. Cars and trucks sit on a 6x6 grid, each able to move only forwards or backwards, and you shuffle them until the red car can drive out of the exit. Puzzle cards go from beginner to expert. The same idea lives on in phone games such as Kiragames’ Unblock Me, which uses wooden blocks instead of cars, and in many parking jam games.
Why people look for games like Rush Hour
- You want a traffic jam puzzle on your phone or computer, with nothing to install.
- You want puzzles that get harder by themselves as you solve them.
- You want a score to compare with friends.
Letternerd vs Rush Hour
| Feature | Rush Hour | Letternerd |
|---|---|---|
| Board | 6x6 grid of cars and trucks | 6x6 grid of blocks two or three cells long |
| Goal | Get the red car out | Get the red block out |
| Puzzles | Cards graded from beginner to expert | A chain of puzzles that gets harder with every one you solve |
| Scoring | Solved or not | Points for each puzzle, more for solving it in the fewest possible moves |
| Help | Solutions on the cards | Three undos a puzzle and three skips a run, each with a cost |
| Length | No clock | A three-minute run |
| Comparing | On your own | A daily board, with a friends view |
Which should you pick?
Pick Rush Hour if
- You want a physical puzzle to hand to a child, away from a screen.
- You want to take as long as you like on one puzzle.
Pick Letternerd if
Pick Letternerd if- You want sliding-block puzzles in the browser, free.
- You like being scored against the fewest possible moves.
- You want to compare with friends on the same puzzles each day.
How to play Unjam
- Open Unjam. Each block slides only along its own length, across or up and down.
- Slide blocks out of the way until the red one can reach the exit. A slide of any distance counts as one move.
- Each puzzle has a par: the fewest moves that can solve it. Hitting par scores the most.
- Solve one and the next, harder puzzle is dealt, until the three minutes are up.
More puzzles that are always solvable
Every Arcade puzzle is built so there is always a way through. Try Trace for joining dots and Sweep for a mine puzzle with no guessing.
Play games like Rush Hour
Free in your browser on any phone or computer. Play alone, or share the room code and everyone joins as a guest.
- UnjamArcade · 1 player · daily boardSlide the blocks out of the way to free the red one, in as few moves as you can.
- TraceArcade · 1 player · daily boardDraw paths to join each matching pair without crossing a line.
- SweepArcade · 1 player · daily boardClear a minefield you can always solve without guessing.
Frequently asked questions
Can you play Rush Hour online?
Rush Hour is a boxed puzzle, but [Unjam](/arcade/unjam) plays the same idea for free in any browser: slide the blocks until the red one can get out.
Is there a game like Unblock Me in a browser?
Yes. Unjam is a sliding-block puzzle in the Letternerd Arcade. It runs on phones, tablets and computers with nothing to install.
What does par mean in Unjam?
Par is the fewest moves that can free the red block, worked out for every puzzle. Solving in par scores a bonus, and each move over par costs a little.
More games
Other comparisons
See all- Path-drawing puzzle appGames like Flow FreeTrace is a free game like Flow Free: draw paths to join each matching pair without crossing, and fill the grid. Bigger puzzles follow. Play in your browser.
- Sliding tile number puzzleGames like 2048Double Up is a free game like 2048: swipe a 4x4 board, merge matching tiles, and compare your score with friends on a daily board. No download, no account.
- Classic logic puzzleGames like MinesweeperSweep is a free game like Minesweeper where every board can be cleared by logic, never a guess. Play in your browser and compare scores with friends daily.
- Block-fitting mobile puzzleGames like Block Blast!Tessel is a free game like Block Blast: place three shapes on an 8x8 grid and clear full rows and columns. Play in your browser and compare scores with friends.
Rush Hour is a trademark of its owner. Letternerd is not affiliated with, endorsed by or sponsored by them. The comparison describes each product as publicly presented and may change; check their site for the latest.