Normal challenge
90 seconds · 3 lives. Build combos and beat your personal best.
Choose a mode and sort parcels by color and shape.
90 seconds · 3 lives. Build combos and beat your personal best.
90 seconds · 3 lives. The same Korean date brings the same parcel sequence.
30 seconds · 3 lives. Sort as many parcels as you can in a quick round.
90 seconds · 1 life. One wrong sort or timeout ends the game.
Personal bests and online rankings are tracked separately for each mode.
Red ← · Blue →
Ignore the shape for this rule.
Circle ← · Triangle →
Color does not matter this time.
The rule alternates every 12 processed parcels, including mistakes and timeouts. The current parcel is judged first, then a 0.7-second change announces the next rule. Both timers pause during it.
Only the large front parcel is active. The two waiting parcels have no running deadline until activated. The same color-and-shape combination appears at most three times in a row.
| Correct streak | Points earned |
|---|---|
| #1 | 100pts |
| #2 | 110pts |
| #3 | 120pts |
| #5 | 140pts |
| #10 | 240pts(includes +50 bonus) |
| #20 | 340pts(includes +50 bonus) |
| #21 | 300pts |
| #30 | 350pts(includes +50 bonus) |
Each correct sort earns 100 points plus 10 per previous combo, capped at 20. Beyond that it earns 300 points. Each multiple of 10 combos adds a separate 50-point bonus.
An active parcel keeps its deadline. Each new parcel calculates a fresh deadline using the combo and active playing time. It starts at 2.4 seconds; the formula is:
max(0.85, 2.4 − min(COMBO, 20) × 0.045 − floor(SECONDS / 25) × 0.15)
A wrong sort or timeout costs one life and resets your combo. Your score stays. Losing all lives ends the game; lasting the mode’s time limit completes the shift. Pauses and rule changes do not consume game time.
Starting has a three-second countdown; resuming has one second. Pauses and rule changes do not count as play time. Hiding the tab or leaving the window pauses automatically. Resume manually to keep the remaining time.
Sound is off by default; use the top button to enable it. Reduced-motion settings limit belt and effect animations. Color and shape names are shown so you do not have to rely on color alone.
The daily challenge changes at midnight in Korea (Asia/Seoul), in every language. The same date has the same starting rule and parcel sequence. The same input progression produces the same next parcels, while reaction time and mistakes affect deadlines and scores.
The first finished daily game is your official result. Reloading lets you resume an unfinished game. After an official result, retries are practice and do not replace it. The daily best includes practice and is shown separately.
Personal records stay in this browser and do not sync across devices. Online submission is optional after finishing; daily practice is excluded.