24 games ranked by how much the tags Steam players vote on them overlap with Rift of the NecroDancer'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: Rhythm, Music-Based Procedural Generation, Music, Anime, Level Editor, Arcade.

1·MUSYNX
88% match · Rhythm, Music-Based Procedural Generation
89% of 6,824 reviews positive

2·Intralism
86% match · Music, Rhythm
86% of 4,822 reviews positive

3·Audiosurf 2
85% match · Music, Music-Based Procedural Generation
83% of 6,050 reviews positive

4·AudioSurf
85% match · Music, Rhythm
96% of 11,106 reviews positive

5·Melody's Escape 2
85% match · Music-Based Procedural Generation, Rhythm
92% of 350 reviews positive

6·EZ2ON REBOOT : R
84% match · Rhythm, Music
91% of 6,300 reviews positive

7·A Dance of Fire and Ice
83% match · Rhythm, Music
94% of 84,025 reviews positive

8·Soundodger+
83% match · Music-Based Procedural Generation, Rhythm
90% of 815 reviews positive

9·Melatonin
82% match · Rhythm, Music
94% of 8,203 reviews positive

10·Muse Dash
82% match · Rhythm, Music
91% of 122,494 reviews positive · 1,282 playing

11·Symphony
82% match · Music, Rhythm
84% of 1,494 reviews positive

12·KickBeat Steam Edition
82% match · Rhythm, Music
67% of 773 reviews positive

13·Audioshield
82% match · Music-Based Procedural Generation, Rhythm
81% of 2,739 reviews positive

14·Groove Coaster
82% match · Rhythm, Music
67% of 1,606 reviews positive

15·Lofi Ping Pong
81% match · Rhythm, Music
86% of 1,880 reviews positive

16·The Polynomial - Space of the music
81% match · Rhythm, Music
73% of 500 reviews positive

17·BARRIER X
81% match · Rhythm, Music
85% of 2,360 reviews positive

18·Beat Hazard
81% match · Music-Based Procedural Generation, Rhythm
95% of 7,452 reviews positive

19·Melody's Escape
80% match · Music-Based Procedural Generation, Rhythm
93% of 4,801 reviews positive

20·BIT.TRIP BEAT
80% match · Rhythm, Music
81% of 883 reviews positive

21·Laserlife
80% match · Rhythm, Music
74% of 117 reviews positive

22·BIT.TRIP CORE
80% match · Rhythm, Music
58% of 156 reviews positive

23·Space Channel 5: Part 2
80% match · Rhythm, Music
89% of 1,867 reviews positive

24·KAMITSUBAKI CITY ENSEMBLE
80% match · Rhythm, Music
71% of 1,500 reviews positive
The closest matches to Rift of the NecroDancer on Steam are MUSYNX, Intralism, Audiosurf 2, AudioSurf, Melody's Escape 2. They rank highest because their Steam community tags overlap most with Rift of the NecroDancer's, and shared tags include Rhythm, Music-Based Procedural Generation, Music.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Rhythm, Music-Based Procedural Generation, Music count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Rift of the NecroDancer's. Popularity never affects the ranking.