4

Background : I am making a unified game launcher, so I can launch games from all the different stores.

Eg: Launch commands for Steam/Origin

steam://rungameid/

origin://launchgame/

I ran into some issues finding a similar structure for EGS. There way of launching games seems a bit complicated. Example down below

com.epicgames.launcher://apps/AzaleaAlpha?action=launch&silent=true

The game is : "The Cycle Early Access".

  • How do I find the installed games which are from EGS?
  • How do I find the exact name of the game which the launch command expects? In the above example it's "AzaleaAlpha" for The Cycle
4

This was an interesting challenge.

First, I created a couple of shortcuts for a number of different games, and had a look at the .url file it created on my desktop. All the links are of the form:

com.epicgames.launcher://apps/[codename]?action=launch&silent=true

Where [codename] is different for each game. For example:

  • Metro Exodus: "Snapdragon"
  • Batman Arkham Knight: "Cowbird"
  • Hello Neighbor: "Ursus"

Since the EGS Launcher must know each of the games' codenames to create these shortcuts, I figured there must be some kind of config file somewhere on my computer, which lists the different codenames and where the games are installed.

So I used Visual Studio Code to perform a search in all files in my C:\ directory to find one of the codenames, and I found a nice list in:

C:\ProgramData\Epic\UnrealEngineLauncher\LauncherInstalled.dat

Despite being a .dat, it's not a binary file, so it can be opened in any text editor app.

The list is a JSON, and contains only the games that have been installed on your PC. It may contain DLCs as well. Here's what mine looks like:

{
    "InstallationList": [
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\MetroExodus",
            "AppName": "SnapdragonDLC1",
            "AppVersion": "0.1.0.17"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\YookaLaylee",
            "AppName": "Duckbill",
            "AppVersion": "1.0.27910"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\HelloNeighbor",
            "AppName": "Ursus",
            "AppVersion": "1.4.1"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\WorldOfGoo",
            "AppName": "Anemone",
            "AppVersion": "1.53"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\BatmanArkhamKnight",
            "AppName": "Cowbird",
            "AppVersion": "1.98"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\BatmanArkhamAsylum",
            "AppName": "Godwit",
            "AppVersion": "1.93"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\TheTalosPrinciple",
            "AppName": "Bustard",
            "AppVersion": "461288"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\QUBE2",
            "AppName": "Auk",
            "AppVersion": "1.2"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\MetroExodus",
            "AppName": "Snapdragon",
            "AppVersion": "0.1.0.24"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\TheOuterWorlds",
            "AppName": "Rosemallow",
            "AppVersion": "Rel1.2.0.418"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\TABS",
            "AppName": "Driftfish",
            "AppVersion": "0.8.7_02"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\AxiomVerge",
            "AppName": "Puffin",
            "AppVersion": "1.47"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\Metro2033Redux",
            "AppName": "Petunia",
            "AppVersion": "0.1.0.0"
        },
        {
            "InstallLocation": "C:\\Program Files\\Epic Games\\BatmanArkhamCity",
            "AppName": "Egret",
            "AppVersion": "1.7"
        }
    ]
}

Interestingly, a copy of the list can also be found in another location:

C:\Users\All Users\Epic\UnrealEngineLauncher\LauncherInstalled.dat

I'm not sure which file is used in which context, but they both have exactly the same content. If your purpose is to simply create a launcher, either file should work.

  • 1
    Any idea why they use codenames? – Joachim Jan 21 at 14:31
  • @Joachim. Unfortunately, no. If they continue like that, they'll eventually run out of codenames, so the codenames would have to come from the developers themselves. However, given the names on my list, they all seem to follow a sepcific theme (they're all either animals or flowers), so it's likely the codenames were chosen by Epic instead. I honestly can't make sense of why they'd do that. Sounds like a lot of effort for no apparent benefit. – Nolonar Jan 21 at 14:37
  • Thank you so much! – Screx Jan 24 at 11:21
  • Any idea how to launch other launchers silently? Like in EGS we can do silent=true can we do the same in other launchers? @Nolonar – Screx Feb 11 at 11:43
  • @Screx, sorry, I don't know. – Nolonar Feb 11 at 20:36

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