GMod Tower was a server for Garry’s Mod that opened on July 26, 2009 and first shutdown on January 1, 2012. The server later reopened in August 2012 before closing its doors again for good in April 2016 in favor of Tower Unite.

The server was conceptualized by MacDGuy in December 2006. The server consisted of a lobby, six gamemodes, an arcade, suites, and stores.

The gamemodes were connected to the lobby through a multi-server system and progress was synced through a database.