Yse a PC/mac like folder system
When I start streaming I'm probably going to be a game gourmet taking requests for games. Same goes for watching others.
Most people do not think of an exact title first.
They think of general categories like:
what era of console war the game was in, or who the system manufacturer was, (or combine both of those above categories for specific system),
as well as game publisher, any famous game creator/studio could have their own folder assuming someone tags them, genres of game content being played starting with the most general and filtering down to more specific. The goal of the goal, (like one credit completion, fastest speed run, one credit points record, beat the story mode, etc). Also expected streamer content and acceptable cheddar content should be filtered. (Use 6+, 10+, 13+ and 18+ in different categories, and independent streamer and chatter ratings, like one person I know should get 13+ for **** clothing, but 6+ [maybe 10+] in acceptable man/woman topic chat allowed). I was kicked out of that channel before the man/wonan talk level was explicitly 6+). And any information the streamer thinks is important, and/or the chatter is willing to search. Have all options available and ask for an O vote to filter in, an X vote to filter out, or a dash vote if either yes or no is acceptable.