The game was originally created and released by Daniel Fearon. At the time, Fearon was one of the maintainers of the
Half-Life fan website
Atomic Half-Life, created in anticipation of the game's release. Fearon was sent a copy of
Half-Life by Valve prior to its official release, and while playing it, he toyed with the game's code, figuring out how to spawn enemy creatures in multiplayer maps. Fearon's work had initially been done before Valve released the
software development kit for
Half-Life, requiring him to craft the modification atop the existing
Half-Life distribution and to work with multiplayer over slower internet connections, such as phone-line
modems. Fearon initially developed a single map that could be played cooperatively, and later a second version with two maps. Around 2004, prior to the release of
Half-Life 2, Fearon had been planning to release
Sven Co-op on
Steam, but didn't due to confusion between the
Sven Co-op team and Valve. This standalone title was released on January 22, 2016, and includes all the assets for
Half-Life required to play that game without installing the original game; players are still required to have purchased and installed
Opposing Force and
Blue Shift to play those in the standalone release of
Sven Co-op. The standalone version includes updated versions of the
Half-Life campaign maps, improved versions of popular maps developed for
Sven Co-op, and additional scripting tools that will allow level designers to further customize new maps beyond the default GoldSrc. McDermott stated that their team anticipates continuing to improve tools for level designers, such as being able to replace the game's default
heads-up display, though as the game is still developed in the team's free time, there is no information on when these will be available. ==See also==