The DMM Game Confirmation Dialog Add-on is a free Chrome extension developed by atano. It falls under the category of Browsers, specifically Add-ons & Tools. This handy tool prevents accidental game closures when leaving the pages of DMM browser games, such as Kantai Collection and Touken Ranbu.

One of the main features of this add-on is the display of a confirmation dialog when attempting to navigate away from a DMM browser game page. This helps to prevent unintentional game closures due to mis-clicked links or other accidental actions. By providing this extra layer of protection, players can avoid the frustration of losing progress or ending a game prematurely.

Please note that the DMM Game Confirmation Dialog Add-on has been confirmed to work with Kantai Collection and Touken Ranbu. It is unclear if it is compatible with other DMM browser games at this time.

With the DMM Game Confirmation Dialog Add-on, players can enjoy a worry-free browsing experience while playing their favorite DMM browser games, knowing that accidental game closures can be easily avoided.