For any game on the store, the User see's 2 recommendation lists near the bottom:
1. Other DLC/Games in the series
2. Other games "like" this game.

But we all know that the list of other games that are "like" this game is either incomplete, or includes irrelevant games that only superficially belong to the same genre (such as Civilization 5 appearing in games like Age of Empires II)

As a user, I would like a new recommendation category on the store page for every game, in order to know what games other fans of my favorite game are playing.

For each game G:
1. find users where game G is in their top 5 most played games of their entire steam library (perhaps setting a minimum hours played threshold depending on the typical hours played for game G?)
2. For each selected user for whom G is in their top 5 all time most played in their personal library, list their top 5 most played games (
3. Perform an intersection on that list of games using one of a few methods
3.a. Sum total hours played for each unique game
3.b. Perform a frequency count, counting how many times each title appears in the top 5 most played games for fans of G
3.n...? using some other method (most frequently interacted, wishlisted, etc...)
4. In the store present a "For Fans Of {G}..." widget that lists the top 10 of whatever accumulation/intersection is done in step 3.

Top 10 hours spent by fans of G (sum hours of top 5 games)
Top 10 most frequently enjoyed by fans of G (how many times the game appears in the top 5 games)
Top 10...? some other method?



To find out what other players who enjoy the same game as me enjoy, it goes far beyond genre or franchise. There are these ethereal connecting properties between games and genres that seem intuitive if you talk to people about what games they like, but unintuitive if you only consider what games "belong togther" by some genre or categorical definition. So instead of using categories and labels, it might be more efficient to find games I actually want to play if we consider what fans of this game are actually enjoying.

If I have historically enjoyed some RTS games, but I'm looking for anew game, maybe I want something other than RTS, but which fits my taste in this particular RTS game. The truth is I probably won't like every RTS on the list of RTS games, but I might really enjoy Quake, or Counter Strike, as it turns out there's a lot of RTS players who share fondness for Arena Shooters and competitive games in general, because there's an unidentified shared heritage with a lot of classic RTS players playing old school shooters.

If there is a high frequency of Counter Strike in the libraries of Age of Empires II players, or if Counter Strike has the most hours played amongst Age of Empires II players, then maybe I would also enjoy Counter Strike if I like Age of Empires II.

This is a specific example, but I wonder this same thing about many games. If I like RTS games, then maybe I would like Baldur's Gate 1&2, but if I'm a CRPG player, maybe or maybe not the same correlation in reverse...

I already know how to filter a google search or even a steam search on genre or category, I can even go ask other RTS players "What RTS games do you like?" But its far more difficult to find a connection like "If you like RTS games then you'll probably really dig EVE: Online"

1. Hot Now: games that are not in the top 5, but is accruing a significant number of hours played in the last week/month/year amongst fans of G
2. Recency bias: perform the same accumulation as before, but for each user of top hours played of Game G, select only most played games from that user from the last 10 years.
3. Legacy bias: select only most played games from each top played user that are older than 10 years old
4. Genre Bias: I'm an RTS enjoyer who likes Age of Empires, but I really want a casual party game to play with my friends.
5. Other parameters: Beyond time, genre, select top 5 games from each top played user where the recent reviews are overwhelmingly positive... or any other future combination of aggregation?