The Voices of VR Podcast interviewed a member of a mod development team for Half-Life 2 called "Synergy." This mod allows players to collaborate and play Source engine games like Half-Life 2, Half-Life 2: Episode 1, Half-Life 2: Episode 2, and other games that use the Source engine, in multiplayer mode. The team has been working on supporting Oculus Rift, and has made progress in this regard. The interviewee joins the team in 2012 and recalls playing the mod in high school as a way to collaborate and socialize with friends. The mod introduces social interaction and increases the replay value of the games. The interviewee mentions that the mod modifies game files on loading to add difficulty or fix errors. They also discuss the integration of other VR components, such as Razer Hydra controllers, which they have considered working on but have not implemented yet as their VR support is still in its early stages. The interviewee expresses their hope to provide an immersive and enjoyable social experience and to add replay value to games that should have a cooperative mode.