I'd argue that video games need remakes and remasters far more than movies do. Video game technologies change a lot in 10-15 years, so a remake/remaster is an opportunity to improve controls and fix issues with running the game on hardware that hadn't been concieved at the time of the game's release. Plenty of old games have severe bugs, outdated controls or general issues with newer hardware (can't handle widescreen monitors, buttons don't scale for high resolutions, etc.) which can make replaying them a pain.

You sit down to watch a 25 year old movie and it's pretty easy to watch, but you sit down to play a 25 year old game and it's going to vary wildly if you can even get it to run in the first place, let alone if it'll run well