Design a Game Recommendation System

Asked at Roblox · System Design for ML · Difficulty: Hard · Last asked May 19, 2026

Design the recommendation system of a large online game platform, with millions of users and hundreds of thousands of user-created games. For each user the system returns a ranked list of games they are likely to enjoy and keep playing. The design should cover the whole pipeline end to end, with breadth across the parts rather than depth on one component.

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