Dice Roller
Need to roll some dice? Write a program for that!
Tower of Hanoi
Code a solver for this famous puzzle using recursion.
Flappy Bird
This popular game is always a fun time. Put your own spin on it!
Tic-Tac-Toe
Here is a shorter description.
Bubble Sort
Sharpen your skills by coding this simple sorting algorithm.
Fibonacci Sequence
This simple number sequence has a lot to offer coders, from simple iteration to recursion and dynamic programming.
Yoda Speak
Translate plain old English into Yoda's way of speaking.
OverTheWire Wargames
Learn and practice hacking/security concepts in the form of fun-filled games.
Hangman (or Snowman)
Put your own spin on this classic word game.
Snake
Create your own version of this popular game.
Insertion Sort
Sharpen your skills by coding this simple sorting algorithm.
Unit Converter
Create a handy tool for converting temperature, weight, time, or distance.
Caesar Cipher
Create encrypted messages using this simple cipher.
Cellular Automaton
A fun way to create interesting patterns based on simple rules.
Pong
Create your own version of this popular game.
SQL Murder Mystery
Can you find out whodunnit?
Coin Toss
Need to flip a coin? Write a program for that!
VIM Adventures
An online game for learning how to use the vim text editor.
Regex Crossword
A crossword puzzle game, where the crossword clues are defined using regular expressions.
Screeps
MMO sandbox game for programmers
Number Pyramid
Write a program to display a symmetrical pyramid of numbers.
Joke Bot
Have some good jokes? Make a bot to tell them! Or, get some jokes from an API.
Chinese Zodiac Calendar
Display each animal sign and tell people which sign they are.
Timer
Create a useful tool for toothbrushing, cooking, and more!
Sudoku Solver
Write a program to solve Sudoku puzzles.
Number Guessing Game
Play this simple game against a friend or the computer.
md5 cracker
Write a program to decrypt this common hashing algorithm.
Binary Birthday Game
Guess a person's birthday using only 5 binary bits.
Palindrome checker
Enjoy word puzzles? This one might be fun for you!
CSS Diner
Learn and practice CSS selectors in an interactive game.
Calculator
Create a basic or advanced calculator.