In July 2009, a small team of developers, working under the names MacDGuy, Mr Sunabouzu, Nican and AzuiSleet, released a server designed for Garry’s Mod called GMod Tower.^[11] GMod Tower was a server designed as a social media platform for users to get together and play minigames. Within hours of release, the website for GMod Tower reached two million views.^[11]

The developers of GMod Tower later formed PixelTail Games, a Washington state-based developer designed to oversee future updates of the server, which shut down in 2016 and was replaced by its own standalone game, Tower Unite.^[12] Speaking to PC Gamer about the move to independence, MacDGuy stated that Garry’s Mod and the source engine had limited them on ideas.^[11]