This channel type is created when a user joins a channel with this - as prefix. The name of the user channel is as default setting just the username of the user, but with a command you can set the name and if its locked or not, also you can add users that can still enter even if the channel is locked. All these settings are globally for this bot and shared across guilds that use this bot.
A game channel is created when a user joins a channel with this - as prefix. The channel is than named after the game that the user is playing, if the user isn't playing a game or the bot can't get the game name then the username of the user creating it will be used instead.