End Game Screen

The end game summary screen (EGS) shows a summary of information about the last game session – such as Actions-Per-Minute and Media highlights.


Supported games: League of Legends, CS:GO, Dota2, Hearthstone, Fortnite, PUBG, Rocket League, Splitgate, Tom Clancy’s Rainbow Six: Siege, World of Tanks, World of Warships


An app that wishes to show it’s own summary information about the last game session can do this as well in the form of a “shelf” inside the EGS window.


An app with a shelf will usually have two declared windows, each with a separate html page – e.g. background.html and shelf.htmlbackground.html is the default window that launches with the game and collects important in-game info. It will decide if and when to call requestToDisplay(). The usual practice is to have background.html set the collected in-game info into the localStorage. Once all info is set into localStorage and requestToDisplay() was called successfully, background.html should close itself ( e.g. window.close())


when the game summary is shown, it will load the shelf.html window as an iframe (please make sure to set the correct property in the manifest.json so that we treat the shelf as an iframe). The shelf should then take any in-game info from the localStorage. This is possible since the two windows (background.html and shelf.html) are running under the same domain.



Steps to integrate your app with the end game summary window:


  1. Declare your app as having an EGS shelf:
    To do this – you need an html page that will implement the UI and logic of the shelf. This HTML is placed inside your opk.

    In the manifest of your app – you should declare the following under:
    the data.windows.egs_shelf_window section:

        file: "files/html/shelf.html", // where the html of the shelf exists in your app
        size: , // To be discussed
        egs_shelf: {
          title: "my shelf", // shelf title
          loading_text: "Loading My App Summary...", // text to be shown while the shelf is loading
          tooltip_text: "My App Summary", // the tooltip to be shown when the user mouse-over's the title of the shelf
          tooltip_url: "http...", // optional url to get more help about the shelf
          logo: "files/images/shelf/logo.png", // shelf's logo in the title
          background: "#FFFFFF", // default ARGB background of shelf
          ftue_header: "My App", // First-time-user-experience message - the title of this message
          ftue_body: "This shelf shows my app's summary of the last game" // FTUE description
  2. Use the overwolf.egs namespace to request (if relevant) to display your shelf in the EGS. The idea is to only ask for the display of your shelf when you have enough information about the game session to display something interesting to the end user. For example, if your app shows the amount of Kills the user has made during the game, yet the user hasn’t killed anyone – you might not want to show your shelf at all.

The flow for displaying a shelf – once you have enough data and want to show your shelf in the EGS:

  1. call:
    overwolf.egs.isEnabled(function(result) {
      // result.status == ["success"| "error"]
      // result.isEnabled == [true | false]

    to see if the EGS is available for this game – it might not be supported for the game or might have been disabled by the end user.

  2. If enabled – call:
    overwolf.egs.requestToDisplay(function(result) {
        // result.status == ["success" | "error"]
        // result.reason == [undefined | "EndGameScreen is disabled" | "Not accepting shelves"]

    This will let the EGS know that your app is interested in opening a shelf in the EGS when the game session is over.

  3. Once the EGS is opened – it will start loading the shelf HTML page in “hidden” mode and wait for it to be ready for display.

From within the shelf’s HTML page context – use the: 

overwolf.egs.setStatus(status, function(result) { ...


status == overwolf.egs.enums.ShelfStatus.[Loading | Ready | Retrying | Error]

and result:

result.status == ["success" | "error"]
result.reason == [undefined | "EndGameScreen is disabled" | "You must first call requestToDisplay()"]

When overwolf.egs.enums.ShelfStatus.Ready is set – the HTML will appear to the user.

If overwolf.egs.enums.ShelfStatus.Error an error message with a Retry button will be shown to the user.


There are two events you may listen to:

  • overwolf.egs.onEgsEnablementChanged.addListener(function(result) { result.isEnabled == [true | false] }); Will indicate when the EGS is enabled/disabled – you can wait on this event if a call to overwolf.egs.isEnabled returns false.
  • overwolf.egs.onRetryRequested.addListener(function() { }); Will be triggered if the overwolf.egs.enums.ShelfStatus.Error status is set by your app and then the user clicked on retry. In this case – the app is responsible for reloading it’s data and then setting a overwolf.egs.enums.ShelfStatus.Ready status.


  • The shelf window will ALWAYS be transparent – Overwolf will override any manifest setting in this regard
  • The shelf window will NEVER be visible in the task manager – Overwolf will override any manifest setting in this regard
  • The shelf window may be opened with/without the app being opened – this means you’ll need to use localStorage to keep track of information between sessions



Version added: 0.94.1

Returns whether Overwolf’s EGS is up and running.

  • Parameter: callback <function>

    The result of the request.


Version added: 0.94.1

Requests a shelf to be displayed in the EGS.

  • Parameter: callback <function>

    The result of the request.

setStatus(status, callback)

Version added: 0.94.1

Set’s the status of the shelf. This call is only valid after a successful call to requestToDisplay().

  • Parameter: status <ShelfStatus>

    The status to update.

  • Parameter: callback <function>

    The result of the request.

setHeight(height, callback)

Version added: 0.103.1

Sets the shelf height – it is up to the Game Summary Screen to accept (or not) the new requested size
The width can not be changed by the app
The shelf should be responsive to the size of the containing window and not to try to change its size according to the call of this function

  • Parameter: height <int>

    The requested height

  • Parameter: callback <function>

    The result of the request


Version added: 0.110.2

Get current EGS session info

  • Parameter: callback <function>

    The result of the request


Version added: 0.110.2

Get current EGS selected match

  • Parameter: callback <function>

    The result of the request

Events How to use events


Version added: 0.94.1

Fired when Overwolf’s EGS screen is enabled or disabled.


Version added: 0.94.1

Fired when EGS requests a shelf to perform a retry attempt in case of an error.


Version added: 0.110.2

Fired when EGS selected match \ session changed


Version added: 0.110.2

Fired when EGS session info changed (new match started)



EGS Shelf Status