Line 4 Line · Weekly build battles for AI-native builders

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Weekly build battles for AI-native builders.

UpcomingS0 · Week 1<br>Starts in :host{display:inline-block;direction:ltr;white-space:nowrap;line-height:1}span{display:inline-block}:host([data-will-change]) span{will-change:transform}.number,.digit{padding:round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) 0}.symbol{white-space:pre}0d:where(number-flow-react){line-height:1}number-flow-react > span{font-kerning:none;display:inline-block;padding:calc(round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) * 2) 0}0d:host{display:inline-block;direction:ltr;white-space:nowrap;line-height:1}span{display:inline-block}:host([data-will-change]) span{will-change:transform}.number,.digit{padding:round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) 0}.symbol{white-space:pre}00h:where(number-flow-react){line-height:1}number-flow-react > span{font-kerning:none;display:inline-block;padding:calc(round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) * 2) 0}00h:host{display:inline-block;direction:ltr;white-space:nowrap;line-height:1}span{display:inline-block}:host([data-will-change]) span{will-change:transform}.number,.digit{padding:round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) 0}.symbol{white-space:pre}00m:where(number-flow-react){line-height:1}number-flow-react > span{font-kerning:none;display:inline-block;padding:calc(round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) * 2) 0}00m:host{display:inline-block;direction:ltr;white-space:nowrap;line-height:1}span{display:inline-block}:host([data-will-change]) span{will-change:transform}.number,.digit{padding:round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) 0}.symbol{white-space:pre}00s:where(number-flow-react){line-height:1}number-flow-react > span{font-kerning:none;display:inline-block;padding:calc(round(nearest, calc(var(--number-flow-mask-height, 0.25em) / 2), 1px) * 2) 0}00s<br>Sell This Startup<br>One fictional startup. Whoever sells it best wins.

UpcomingS0 · Week 2

The Perfect Article<br>Same article for everyone. Build the best possible way to read it.

UpcomingS0 · Week 3

Creative Instrument<br>Build a browser toy that turns simple input into something worth keeping.

UpcomingS0 · Week 4

The Explainer<br>Same dense paper for everyone. Make it make sense.

UpcomingS0 · Week 5

The Impossible Hero<br>One product, one headline. Build the interactive 3D hero it deserves.

UpcomingS0 · Week 6

Finale: Ship a Product<br>No theme. Full product. Two weekends. Launch it.

UpcomingS0 · Flash

The Perfect Card<br>48 hours, one data object, every state. Ship the perfect card.