1 🗺️Hello World
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2 🔂For Loops Simple
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3 🧮Calculator
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4 📈Sum to 1 Million!
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5 👦🏻What's your name?
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6 ☎️Validating Phone Numbers
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7 ⛳Golf Scores
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8 📘ISBN Checker
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9 💰Lottery
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10 #️⃣Hashtags
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11 ❗Factorial
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12 ♾️Fibonacci Sequence
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13 🔠Letters Between
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14 🔳Padding
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15 ✒️String Repeat
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16 🔒Pin Cracker
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17 📊Min, Max, Mean & More
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18 ❌n-Times Table
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19 *️⃣Multiplication Table
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20 1️⃣2️⃣Even or Odd
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21 🟩Is Square?
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22 🌟Is Prime?
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23 🔢Is Integer?
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24 📖Number Facts
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25 👨🏻‍💻HTML Text Parser
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26 🌴Word Stemmer
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27 🅰️Count Vowels
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28 ⬆️Absolute Value
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29 👵👶🏻Who's Older?
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30 📊Averages
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31 🔟Denary <-> Binary
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32 💻Binary <-> Hexadecimal
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33 🎨Denary <-> Hexadecimal
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34 🎲Guess the Number!
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35 🗝️Login System
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36 🏫Class Scores
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37 🪄Spellchecker
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38 🚫Banned Words
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39 🟨🟩🟦Consecutive Cubes
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40 🤴"Encryption" - Caesar Cipher
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41 🎱Vector Addition - Simulating Collisions
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42 🌌42
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43 📐Pythagorean Theorem
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44 🚗SUVAT - Equations of Motion
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45 🔠🔡Case Converter
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46 🔠🔡ToGgLe CaSe
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47 🔀Encryption - Substitution Cipher
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48 🚮Remove Double Spaces
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49 🔐File Encrypter / Ransomware
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50 🗝️Keygen
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Buy a license to get access to 440 challenges (with an additional 10-20 added each week - until we reach 500)