Advent of Code
Annual programming puzzles released daily every December

Advent of Code is an annual online event featuring a series of daily programming puzzles released throughout December, similar to an advent calendar. Participants solve challenges using any programming language of their choice, often competing on leaderboards. It is free to participate and draws a large community of developers each year.
Each day in December a new two-part puzzle is unlocked, and participants submit solutions written in any language to earn stars on a global or private leaderboard.
software developers and programming enthusiasts
Background.
- Status
- launched
- Business model
- free
Similar projects.
Editorial take on the space this project sits in — momentum signals, adjacent moves, our call on whether the wedge is real. Get pinged when we publish a new read or when the landscape shifts.
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Tell us what you’d build differently, where you think the incumbents miss, or what we’ve gotten wrong about this project. Comments + reactions are coming soon.