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 Devil Daggers on Steam are Swarmlake, Ratz Instagib, Quake 4, Quake Live, DOOM. They rank highest because their Steam community tags overlap most with Devil Daggers's, and shared tags include Arena Shooter, Bullet Hell, FPS.
How are games like Devil Daggers chosen?
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Arena Shooter, Bullet Hell, FPS count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Devil Daggers's. Popularity never affects the ranking.
