24 games ranked by how much the tags Steam players vote on them overlap with Islands of Insight's. A rare tag counts for far more than one that sits on half the store, and popularity never moves a game up.
What they share most: Logic, Nonlinear, 3D, Exploration, Puzzle-Platformer, Mystery.

1·Tvö
81% match · Logic, Nonlinear
72% of 606 reviews positive

2·App 636400
80% match · Logic, Nonlinear
69% of 54 reviews positive

3·The Talos Principle 2
78% match · Philosophical, Logic
95% of 13,426 reviews positive

4·Riven
78% match · Philosophical, Logic
92% of 2,885 reviews positive

5·Manifold Garden
77% match · Philosophical, Nonlinear
95% of 8,575 reviews positive

6·The Witness
77% match · Philosophical, Nonlinear
84% of 21,416 reviews positive

7·The Talos Principle
74% match · Philosophical, Puzzle
95% of 33,054 reviews positive

8·Everything
74% match · Philosophical, Relaxing
83% of 3,866 reviews positive

9·ANIMAL WELL
73% match · Puzzle-Platformer, Nonlinear
96% of 24,648 reviews positive

10·The Pedestrian
72% match · Logic, Puzzle-Platformer
97% of 6,119 reviews positive

11·Zoonomaly
72% match · Nonlinear, Exploration
79% of 987 reviews positive

12·Toki Tori 2+
72% match · Nonlinear, Puzzle-Platformer
85% of 1,105 reviews positive

13·Lightmatter
72% match · Logic, Puzzle-Platformer
92% of 2,907 reviews positive

14·Haven Moon
71% match · Logic, Philosophical
79% of 698 reviews positive · 1 playing

15·HOME
71% match · Philosophical, Relaxing
90% of 3,318 reviews positive

16·A Little to the Left
71% match · Cozy, Logic
92% of 19,214 reviews positive

17·Hello Kitty Island Adventure
71% match · Cozy, Relaxing
94% of 12,495 reviews positive · 795 playing

18·The Last Campfire
71% match · Philosophical, Puzzle-Platformer
97% of 20,701 reviews positive

19·The Swapper
70% match · Philosophical, Puzzle-Platformer
94% of 7,585 reviews positive

20·Hexcells Infinite
70% match · Logic, Puzzle
97% of 4,712 reviews positive

21·Evan's Remains
70% match · Puzzle-Platformer, Logic
88% of 2,134 reviews positive

22·Laughing to Die
70% match · Philosophical, Puzzle-Platformer
96% of 3,305 reviews positive

23·Oddsparks: An Automation Adventure
70% match · Cozy, Logic
83% of 2,289 reviews positive

24·Agent A: A puzzle in disguise
70% match · Logic, Cozy
95% of 6,259 reviews positive
The closest matches to Islands of Insight on Steam are Tvö, App 636400, The Talos Principle 2, Riven, Manifold Garden. They rank highest because their Steam community tags overlap most with Islands of Insight's, and shared tags include Logic, Nonlinear, 3D.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Logic, Nonlinear, 3D count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Islands of Insight's. Popularity never affects the ranking.