I want to remove all the games that are installed by default.
How can I do it all at once?
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It only takes a minute to sign up.Sign up to join this community
install synaptic package manager
sudo apt-get install synaptic synaptic
Choose menu item .. Settings > filters In the lower left of the window click "New". Enter a name at the top left. On the right side click "Deselect All", then click "Installed" to check only that box. Now click on the Section tab and select the "Include selected sections only" radio button. In the list above ctrl+click to include the following from the list: games, multiuniverse/games, universe/games. Press OK to exit the window and save your filter.
Click Custom Filters at the lower left and you should have a new entry with the name you choose in the list above. Click that to see a list of all games that are installed. On the right top pane click the button in the first column then click "mark for removal". Mark for complete removal to also remove any settings. Finally, use the √ along the top of the interface to apply the removal.