Write real code

• Each puzzle must be solved by writing real Java code which will be compiled and validated.
  
• Real code compilation means there are many ways to solve a problem, any valid solution will work
  
• Learn faster by writing real code
  
• Learn to understand error messages and debug problems.

Solve puzzles

• Solve over 80 unique programming problems
  
• Your answers will change the game world
  
• Solve alone or with help

Learn Java features including:

• Primitive Types
  
• Strings
  
• Classes & Methods
  
• Constructors
  
• Instances
  
• Conditionals
  
• Loops
  
• Arrays
  
• Lists
  
• Exception handling

Learn Object Oriented Programming concepts

• Inheritance
  
• Encapsulation
  
• Polymorphism