How ECHO works

Survive as long as you can. Your score is the time you stay alive, to the hundredth of a second.

Playing

Tap anywhere on the screen (or press Space) to jump. Hold to keep jumping each time you land.
You run automatically from left to right and the world speeds up slowly the longer you last.
Spikes come towards you. The game picks the jump height for you: a short hop for a small spike, higher for a tall one.
Every jump comes back. Exactly 4 seconds after you jump, a ghost of that jump (an Echo) appears from the right and repeats your jump at you. It crosses you once, then fades for good.
If an Echo is low when it reaches you, you must jump it. If it is high, you can run under it. Touching a spike or an Echo ends the run.
Jumping more creates more Echoes. Jumping only when you need to is the main skill.
The thin timeline under the timer shows every Echo still to come and how many seconds away it is.

Each day, every player in the world gets the same course: the spikes appear in the same places and at the same times for everyone. Your Echoes are your own, because they come from your jumps.
A day runs from midnight to midnight UTC (1:00 am to 1:00 am in British Summer Time, midnight to midnight in winter). At that moment a new course is generated for the new day; the previous day's course is finished and kept in the archive.
The course itself is random each day. It is not planned, voted on or chosen by anyone; it simply changes once every 24 hours.
If you play offline, your run uses a private course instead, so it counts for the all-time board but not for the day.

Today ranks everyone's best time on today's course. It starts empty each day when the course changes. Yesterday's results are not deleted; they are archived for that day.
All-time ranks everyone's best time ever, on any day's course. It never resets, and your best stays until you beat it or delete your account.
Ranking is by longest time first. If two players have the same time, the one who set it first ranks higher.
You move up and down only when bests change. Your all-time position can drop if other players beat your time; your time itself never changes.
So your position can look different from one day to the next: Today shows a new race on a new course; All-time shows the same lifetime list.
Every ranked run is checked on our server by replaying your taps. Runs that cannot be reproduced are rejected and never appear.
Tap any player on the board to watch their best run, browse their history, or race them live on today's course.

Persists: your username, your all-time best, your run history and replays, and every past day's board.
Resets daily: the course, and the Today board (archived, not erased).
Never changes on its own: your times. Only you can improve them, and only you can delete your account (Settings).

3 to 16 characters: letters, numbers and underscores. One per player; names are unique whatever the capitalisation. You can change yours every 30 days.
Names must be appropriate. Inappropriate names are refused when chosen, and may be changed or removed later. Please don't use your real name.