Pro tip: to get an HD 1:1 cover for your retro games, look up *game name* ign on google images

[RetroShmetro]

Works 100% of the time for me, even with some JP only titles

 

[SliperyHippo]

How nice of them!

 

[qtYami]

ur gay

 

[nobitakun]

You can write tgdb instead of ign.

 

[qw90700]

Well I use this website as an example: https://www.mobygames.com/game/18791/racing-lagoon/covers/

It's also so cool that they also upload promo stuff too like posters.

Also this website can be useful especially for Steam library and finding some different covers for whatever purpose you have like merging them all to create your own custom ultimate cover, poster or something lol: https://www.steamgriddb.com/game/5263603

Don't hesitate, you may find many games despite how old and rare they may be!!!