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 Splice on Steam are KAMI, Glass Masquerade, Pixel Puzzles: Japan, Glass Masquerade 2: Illusions, Divide By Sheep. They rank highest because their Steam community tags overlap most with Splice's, and shared tags include Puzzle, Relaxing, Casual.
How are games like Splice chosen?
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Puzzle, Relaxing, Casual count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Splice's. Popularity never affects the ranking.
