Sunbird is a game about one decision, made over and over, faster than you can think about it.

Tap to fly. Thread the gaps in the standing stones. That's the whole control scheme — and it takes about four seconds to learn.

SHAVE THE STONE. Pass close enough to graze and you'll earn fireflies. Pass closer and earn more. String grazes together and the multiplier climbs, up to five — until one clean, safe pass breaks the chain. Your score never changes; only your nerve pays.

TWO WAYS THROUGH. Some stones open twice. Take the high road and you'll pass safely with nothing to show for it. Drop into the low passage — tighter, closer to the ground, where the fireflies are — and you'll have to climb back out.

A WHOLE DAY IN ONE FLIGHT. The sky turns as you go: daylight, dusk, night, dawn. It goes dark on the hundredth stone and comes back around at two hundred, and the sun glyphs carved into the stones glow gold while it's night. Almost nobody flies a full cycle. That's the point of it.

THE SAME COURSE FOR EVERYONE. There is one course a day, identical for every player in the world — same stones, same fireflies, same choices, generated to land in exactly the same place on every phone. Fly it, then send someone your run.

SHARE THE HIGHLIGHTS AS A VIDEO. When a flight ends, the game cuts the moments worth watching — the razor grazes, the chains, the sky turning, the crash — into a short vertical clip you can post anywhere. It carries the course code, so whoever sees it can fly the exact same stones.

SEND SOMEONE YOUR COURSE. Every course has a six-character code. Give it to a friend and you both fly identical stones — same gaps, same fireflies, same decisions.

EARN YOUR FEATHERS. Nothing is for sale. Every bird is unlocked by a single flight that did the thing — forty stones, eighty fireflies, a whole day — and the trail behind you grows every twenty-five stones, ending in an aurora if you make it all the way round.

PRACTICE WHENEVER YOU WANT. Wider stones, slower going, nothing recorded and nothing earned. Somewhere to learn the tap.