Santa was hoping for a white Christmas, but his weather machine's "snow" function is powered by stars, and he's fresh out! To save Christmas, he needs you to collect fifty stars by December 25th.

Collect stars by helping Santa solve puzzles. Two puzzles will be made available on each day in the advent calendar; the second puzzle is unlocked when you complete the first. Each puzzle grants one star. Good luck!

• Day 1: Not Quite Lisp
• Day 2: I Was Told There Would Be No Math
• Day 3: Perfectly Spherical Houses in a Vacuum
• Day 4: The Ideal Stocking Stuffer
• Day 5: Doesn't He Have Intern-Elves For This?
• Day 6: Probably a Fire Hazard
• Day 7: Some Assembly Required
• Day 8: Matchsticks
• Day 9: All in a Single Night
• Day 10: Elves Look, Elves Say
• Day 11: Corporate Policy
• Day 12: JSAbacusFramework.io
• Day 13: Knights of the Dinner Table
• Day 14: Reindeer Olympics