"The basic idea behind open source is very simple. When programmers on
the Internet can read, redistribute, and modify the source for a piece
of software, it evolves. People improve it, people adapt it, people
fix bugs. And this can happen at a speed that, if one is used to the
slow pace of conventional software development, seems astonishing...
...The Open Source pages exist to make this case to the commercial world." - Introduction to Open Source - www.opensource.org
Complica4 is a modified version for four players of the game Complica, which is similar to the game Connect Four. In Complica (not like in Connect Four), when a piece is placed, it does not remain there for the entire game. Another piece may be used to slide the entire row over. Winner is first person to have 4 pieces in a row. The mechanic of the sliding rows means that each player can possibly have 4 in a row at the same time, causing the game to continue until this situation can be broken up.
The source code of the game can be found at: https://github.com/VelbazhdSoftwareLLC/Complica4