I'm no expert in the field, but during covid I got into collecting old video games (PS1, PS2, PS3). The demand at that time resulted in retro video games to go up in price, but it's still always hit & miss depending on the title. Basically your triple A games and anything that was printed in large production will remain at a pretty low value, but you might have a game or two in your collection that's more coveted by collectors.
Depending on the size of your game catalogue I'd start by referencing
https://www.pricecharting.com/ to see if you have any gems. Another suggestion would be visiting a local retro gaming store and seeing how much you can get for all to save yourself the hassle of selling everything individually on ebay or something.