Step 1: Establish the base color for the cat's body.
Continuously tap white sand balls to fill moving empty buckets.
The progress bar for the white areas of the cat pattern above starts filling rapidly.
Complete walkthrough and strategy guide for Sand Loop Level 90. Watch the video tutorial and learn expert tips to beat this level.

Watch this video walkthrough to learn how to beat Sand Loop Level 90. Follow the step-by-step solution.
Master Sand Loop Level 90 with our complete walkthrough. This easy level typically takes 2–3 min to complete. Find tips, video guides, and strategies for this puzzle level.
The core of this level is to restore the three-color pixel cat; the difficulty lies in frequent multi-color switching and limited sand sources, and the key operation is to expand conveyor belt slots to improve fault tolerance.
| Time | Scene | Action | Common Error | Confidence |
|---|---|---|---|---|
| 00:02 | Initial level loading, displaying the target pattern (three-color pixel cat) and the 'SUPER HARD' label. | Start filling large areas with white sand for the base color. | Not observing the conveyor belt speed and clicking directly, causing sand to spill. | 90% |
| 04:06 | Extra Slot purchase interface pops up. | Click to purchase (or obtain by watching a video) the 6th slot position. | Ignoring this feature leads to being unable to handle multiple colors appearing simultaneously later. | 100% |
| 05:15 | Enter the pattern detail (cat eyes, ear tips) filling stage. | Precisely control a single bucket to fill a specific color, avoiding already filled areas. | Repeatedly pouring sand into already filled areas leads to sand source depletion. | 85% |
Continuously tap white sand balls to fill moving empty buckets.
The progress bar for the white areas of the cat pattern above starts filling rapidly.
Use gravity sensing to let sand flow through obstacles, and click Extra Slot to add storage positions.
The conveyor belt can now hold 6 buckets.
Alternately fill orange and purplish-brown sand, paying attention to the numerical balance above the sand balls.
The cat's ears, tail, and spotted areas light up and complete one by one.
Color Contamination (Color Mixing)
Fix: Wait for the previous bucket to completely leave the sand-filling spout before clicking the next color.
Evidence Time: 02:15
Resource Depletion
Fix: Reduce ineffective sand pouring on question mark areas and obstacles, ensuring each bucket accurately enters the cat's outline.
Evidence Time: N/A
If there are not enough coins to purchase extra slots
Adaptation: A 'clear-reset' strategy must be adopted, meaning waiting for one batch of color to be completely poured before filling the next batch, strictly prohibiting mixed loading.
Q: What do the numbers '40' and '29' on the left mean?
A: They represent the total amount of sand remaining for the current color. If it reaches zero and the pattern is not completed, the challenge fails.
Q: How to deal with blocks with question marks?
A: These are hidden paths, usually unlocked automatically by filling adjacent areas or reaching specific progress.

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