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You approach it and never arrive.

Asymptote is a free online calculus game: a calculus practice game for derivatives, limits and integrals, with typed answers and a live mode for class. Newest guide: U-Substitution: Steps, Examples & Practice Problems.

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The Weekly Event

The next one is a surprise.

Once a week, on a day nobody knows in advance, Sprint gets a twist for 24 hours, with its own leaderboard and a Squiggle you can only win. It is announced across the top of the site the day before.

Lim-pet
Lim-petHalves the distance every day. Has been halving it since spring.
SpecialLimit Day only

Limit Day winners

blahdah won Lim-pet

Best rookie: scribbler, who wins it too.

Final board: Limit Day

21 players
  1. 1blahdah62
  2. 2scribblerrookie52
  3. 3Hunter_VIV34
  4. 4space61826
  5. 5Atiksh23
  6. 6Txeee20
  7. 7SergeyCs19
  8. 8Vincent070516
  9. 9Roganrookie13
  10. 10mathrookie12
  11. 11joeyrookie12
  12. 12maxi01334rookie10
  13. 13CarlGaussrookie10
  14. 14Blasxtyyrookie7
  15. 15Mathgineer6
  16. 16nazarriestarookie6
  17. 17starsendrookie5
  18. 18Skrubzerorookie3
  19. 19soysauce_5684rookie3
  20. 20undefinedcritterrookie2

Problems solved in one run. Ties go to whoever got there first. Limit Day · 2026-W42

How it works

  • When: once a week, on a different day each week. It starts at 14:00 UTC and lasts exactly 24 hours. The day before, a banner across the top of the site says it is coming.
  • Your score: play as many times as you like. Only your best run counts.
  • Ties: if two players have the same score, whoever got it first ranks higher. That decides prizes too, so the earlier run wins the tie.
  • Prizes: handed out automatically shortly after the event ends: the Squiggle to first place and the best rookie, 100 and 50 coins to second and third.
  • Separate from ranked: event runs never touch the ranked boards or use up your daily ranked runs. Sign in to be on the event board; guests can still play.