Sort Stack

Sort Stack offers a calming yet mentally stimulating puzzle experience. The objective is straightforward: each stack contains a mix of colored blocks, and your task is to move them around until every stack holds blocks of a single color. However, the seemingly simple premise quickly evolves into a complex test of foresight and strategy as the number of colors and stacks increases. The game's clean visuals and gentle pace create a relaxing atmosphere, but don't be fooled—each level is carefully designed to challenge your planning skills. With no time limits and no pressure, you can approach each puzzle at your own speed, making it perfect for a quick mental break or a longer session of sustained focus. As you progress, you'll encounter increasingly tricky arrangements that require careful moves and a clear head to solve.

WaffleMath

Sort Stack

Common Core State Standards

Every game supports specific Common Core standards. Browse the full standards library.

MP3Argue with math MP1Make sense of problems MP7Use structure MP4Model with mathematics MP2Reason abstractly 1.G.A.1Shape attributes K.G.A.1Position words 2.G.A.1Draw shapes with attributes

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What is Sort Stack

Ready to put your sorting skills to the test? Sort Stack is a puzzle game that turns a simple concept into a series of increasingly clever challenges.

How to Play

Tap or click on a stack to select its top block, then choose another stack to move that block there. You can only place a block on top of a matching color, and you need to sort all colors into complete stacks to beat the level.

Tips for Playing

Focus on freeing up a stack to use as a temporary holding area, moving blocks out of the way when needed.
Remember that you can always undo a move if you realize you're stuck, so don't hesitate to experiment.
Try to avoid moving a block onto a stack if it would trap a different color underneath.
Plan a few moves ahead, but remember that the game allows you to rearrange blocks freely, so there's often more than one solution.
If you get stuck, take a step back and look at the overall layout instead of focusing on one stack.

Frequently Asked Questions

Are there unlimited levels in Sort Stack?

Sort Stack includes a large number of levels with increasing difficulty. While there are many to play, the game does have a definite end after the final level.

What happens if I get stuck on a level?

If you're stuck, you can use the restart button to reset the level, or undo your moves to try a different approach. There's no penalty for restarting.

Is there a time limit in the game?

No, there is no time limit in Sort Stack. You can take as long as you need to solve each puzzle, which makes it a great game for relaxing.

Can I play Sort Stack on my phone?

Sort Stack is a browser-based game that works on most devices with a screen and internet connection, including smartphones and tablets. The controls are designed for touch as well as mouse.

How do I unlock new levels?

You unlock new levels by completing the previous ones. Each level that you solve advances you to the next in the sequence.

Are there any in-game purchases?

No, Sort Stack is a completely free game with no in-game purchases. You can play all levels without spending anything.