OpenXcom

One of many UFO: Enemy Unknown remakes; one of the few to be open-source.  

Story

It is the year 2011. Constant gameplay crashes have started appearing with disturbing regularity under modern OSes. Reports of lacking compatibility and hyperspeed-scrolling have struck terror into the hearts of millions. Mass public hysteria has only served to expose Earth's impotence against finding a game to equal the original UFO: Enemy Unknown.  

Many developers have attempted to deal independently with a remake. In September 2004, one such coder established a a project, written in Java. Bolstered with the free time available to the average teenager, it looked like a promising attempt, however after six years of mostly inaction he'd yet to code in a single UFO interception. The lesson was clear: this was a wordwide problem which could not be dealt with by individual programmers.  

On May 13th 2010, SupSuper released his personal work on SourceForge. After a little pondering, other coders joined in to complete the remake. This group would be composed of the world's finest coders, tinkers and hackers, working together as one multi-national force.  

This organisation's project was named OpenXcom.