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 OMON Simulator on Steam are Nyasha, Nya Nya Nya Girls (ʻʻʻ)_(=^･ω･^=)_(ʻʻʻ), War Blade, Wet Girl, SUCCUBUS: Prologue. They rank highest because their Steam community tags overlap most with OMON Simulator's — shared tags include Nudity, Sexual Content.
How are games like OMON Simulator chosen?
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Nudity, Sexual Content, Racing count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches OMON Simulator's. Popularity never affects the ranking.
