The Clash game mode is just one of the new features to come to Overwatch 2 with Season 10, though the arrival of the Hanaoka map for this mode coincides with the temporary removal of the classic map Hanamura due to an issue that wrecked the level's geometry and made it completely unplayable. Although Hanamura doesn't appear in regular Quick Play or Competitive playlists, along with all other Overwatch 2 maps that are part of the old Assault game mode, these levels have nonetheless existed in the game since launch and are accessible via either the Arcade game mode or through custom games.