Yeah i have 4 categories in steam

• Beaten - games I have completed
• want to complete - my real backlog
• can never complete - for games that don’t have a real end like mmos or multi-player only games.
• Dead Games - for games that no longer work anymore because the publisher shut down the servers. This is a reminder to not buy these kind of games in the future.

I also add non steam games like Playstation and Switch games as shortcuts to a desktop files named after the game that point to nothing. Then add it to the categories to track.