Sandtrix

Reviewed by our games team

★★★★½ 4.5 (1,057)Puzzle
MobileTetrisColor2DLogic

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Sandtrix is a free browser puzzle game that puts a sand-physics twist on classic Tetris. Falling pieces shatter into loose sand on landing, and your job is to align matching colors into a solid horizontal line to clear the board. Play it free with no download or sign-up. It runs on desktop and mobile, so it works at school or work wherever browser games are allowed.

What is Sandtrix?

Sandtrix (also called Sandtris or Sand Tetris) is a 2D puzzle game built around one key idea: blocks do not stack rigidly like in Tetris. Each piece crumbles into individual sand pixels the moment it touches the pile. You then have to coax the resulting loose grains into a full left-to-right color band. Get a complete row of one color and the pixels vanish, earning you points. The game went viral on TikTok under several names, which is why you may have seen it before without knowing the title.

Placing and rotating blocks

Use these controls to steer pieces before they settle.

ActionDesktopMobile
Rotate blockW or Up arrowTap
Move left / rightA/D or Left/Right arrowsSwipe left or right
Drop block fasterS or Down arrowSwipe down
PausePPause button
Confirm / UI interactEnter or left mouse buttonTap

Modes and scoring

Sandtrix has three modes, each rewarding a different style of play.

ModeGoalTime limit
EndlessClear sand until the pile reaches the topNone
High-score (3 min)Score as many points as possible3 minutes
Clear 40Clear exactly 40 rows without failingNone

Difficulty and combo system

Three difficulty settings control both the game speed and the available play space. Easy gives you the full grid at a manageable pace. Medium and hard shrink the usable area and raise the drop speed, making color alignment much harder to manage.

Scoring rewards speed. Each cleared pixel earns one point. Clear another row before the combo meter empties and the multiplier grows, up to a maximum of 10x. Keeping a combo streak running is the fastest way to build a high score in the 3-minute mode.

Tips for clearing rows faster

Sandtrix FAQ

Is Sandtrix free to play?
Yes. Sandtrix is completely free. No download, no account, and no payment are required.
Can I play Sandtrix unblocked at school or work?
Yes. The game runs entirely in your browser, so it loads at school or work wherever browser games are not blocked. Just open the page and press play.
Does Sandtrix work on mobile?
Yes. The game supports touch controls on phones, tablets, and Chromebooks. Tap to rotate and swipe to move or drop a block.
What is the difference between Sandtris and Sandtrix?
They are the same game. Sandtrix went viral on TikTok under several names including Sandtris, Setris, and Sand Tetris. The official title on this page is Sandtrix.
How does the combo system work?
Clearing a row starts a combo timer. Clear another row before the timer empties and the multiplier increases, up to 10x. Each pixel cleared earns one point, so a 10x combo makes a big difference in the high-score mode.
Which difficulty should I start with?
Start on easy. Medium and hard both reduce the available play space and increase drop speed, which makes managing the sand physics much harder. Getting comfortable with how pieces crumble on easy first will save a lot of frustration.