Valve tests personal release calendar on Steam — it works around the clock

The calendar locates other players whose playtime profiles resemble yours, then checks which titles those players have added to their wishlists. It prioritizes games you play most frequently (relative to other users) and where you spend the bulk of your time. A few minutes spent in a new title or demo won’t meaningfully influence recommendations, whereas extended playtime in a new favorite will. Updated daily: the recommendation model retrains every day using the latest data. Your suggestions won’t usually shift dramatically from one day to the next, but over time you’ll see new entries — the calendar’s eight-week window advances and developers continue to announce release dates.