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 Ratz Instagib on Steam are Nexuiz, TOXIKK™, Quake Live, Wickland, Quake III Arena. They rank highest because their Steam community tags overlap most with Ratz Instagib's, and shared tags include Arena Shooter, FPS, First-Person.
How are games like Ratz Instagib chosen?
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Arena Shooter, FPS, First-Person count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Ratz Instagib's. Popularity never affects the ranking.
