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 Project CARS 3 on Steam are Project CARS, F1 2019, F1 2017, Forza Horizon 5, CarX Street. They rank highest because their Steam community tags overlap most with Project CARS 3's — shared tags include Racing, Automobile Sim, Driving.
How are games like Project CARS 3 chosen?
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Racing, Automobile Sim, Driving count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Project CARS 3's. Popularity never affects the ranking.
