steamgriddb-manager VS Playnite

SteamGridDbManager

Sure you can do that on Steam either as adding any game as non-Steam game from menu or use tools like this to do that.

You should really use steamgriddb manager to set consistent images that's what ROMs ce done and it looks great https://www.steamgriddb.com/manager

Steam already has that feature way way before even others were a thing back then. It's https://help.steampowered.com/en/faqs/view/4B8B-9697-2338-40EC and to do this in a shortcut, you can use https://www.steamgriddb.com/manager to import your "installed" games from other launchers.

The tool https://github.com/SteamGridDB/steamgriddb-manager

Steamgriddb manager? just googled it, https://www.steamgriddb.com/manager found that it is not under development? I didn't plan to replace it, but I can imagine that there is probably some overlap.

Have you tried SteamGrid DB Manager ? It has worked to import games for Epic and other launchers before. I have Battlefront II from Epic sure also and i think I used that to import it.

steam grid db manager

for Epic and the rest: I would use https://www.steamgriddb.com/manager (or https://github.com/WombatFromHell/OriginSteamOverlayLauncher) for this sort of stuff...but it may be reliable for certain games (aka Call of Duty Warzone).

There is also this manager which is made for many launchers to be easy to import into steam. I've never used it personally and don't know if it's made for steam input in mind.

I've done something similar before with Playnite (an open-source PC game library manager), which has an HLTB plugin.

Playnite: The one with the most features and libraries available via addons and has a lot of options for customization. In my opinion the best one available for this purpose.

Here's a project for Playnite 11: https://github.com/JosefNemec/Playnite/milestone/9

As for my LGO, the only other app I've installed outside of the standard launcher was Playnite to consolidate all games into one place as Legion Space doesn't detect everything I have installed and I don't want to manage manually adding games to their launcher.

use playnite instead of the individual launchers.

Here is where I come in and recommend everyone check out Playnite: https://playnite.link/

When I care about supporting a developer or publisher and they offer their product on their own storefront DRM-free, I will often go there to buy. Or I buy from GoG which takes a smaller cut. Playnite lets me launch my Steam and non-Steam games in a seamless fashion. Steam still does a great job as a game installer/patch manager, and helps me discover new games. But I'm not locked into paying them a 30% fee, which is pretty brutal for some smaller publishers.

Game Launcher https://playnite.link/

For anyone with any of the myriad of HDR monitors that prefers to leave desktop mode in SDR RGB, I just discovered that the excellent Playnite game launcher has a feature where you can enable HDR on a per-game basis. Simply tick the "Enable HDR support" option under "Advanced" tab for the settings of the games that you want HDR turned on for. I was previously using the now-abandoned AutoActions for this, so glad to see there's an alternative in a tool I already use.

Not exactly what you are looking for, but I've been using Playnite to launch everything on my computer for years.