It’s usually played on specifically designed maps. It can be played on any map as a stand-alone mod or coupled with many other mods. Sandbox is a Team Fortress 2 mod-gamemode.
Not Sandbox as in the practise of running multiple copies of Team Fortress 2 on a single computer. This video pertains to Sandbox, the Team Fortress 2 mod-gamemode. Note: This is the video's script and may not be formatted well for reading.
