Matches come from the tags Steam players vote on each game, weighted so a rare tag counts for far more than one that sits on half the store. A game's popularity never moves it up this list.
The closest matches to Zup! on Steam are Zup! 3, Zup! 8, Zup! 2, Zup! X, Zup! Z. They rank highest because their Steam community tags overlap most with Zup!'s — shared tags include Fast-Paced, Minimalist, Puzzle.
How are games like Zup! chosen?
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Fast-Paced, Minimalist, Puzzle count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Zup!'s. Popularity never affects the ranking.
