Games like Heatwave
Games like Heatwave include GUILTY GEAR -STRIVE-, Rivals of Aether, MELTY BLOOD: TYPE LUMINA, BlazBlue Centralfiction, and Street Fighter™ 6. We matched them by the tags players give Heatwave on Steam (2D Fighter, LGBTQ+, Visual Novel, Pixel Graphics, and Arcade): closest matches first, and among equally close ones the better-known games.

GUILTY GEAR -STRIVE-
Shared: 2D Fighter · Fighting · Arcade

Rivals of Aether
Shared: 2D Fighter · Pixel Graphics · Fighting

MELTY BLOOD: TYPE LUMINA
Shared: 2D Fighter · Pixel Graphics · Fighting

BlazBlue Centralfiction
Shared: 2D Fighter · Visual Novel · Fighting

Street Fighter™ 6
Shared: 2D Fighter · Arcade · Fighting

Persona 4 Arena Ultimax
Shared: 2D Fighter · Action · Fighting

VA-11 Hall-A: Cyberpunk Bartender Action
Shared: Visual Novel · Pixel Graphics · LGBTQ+

SANABI
Shared: Pixel Graphics · Action · Cyberpunk

Katana ZERO
Shared: Pixel Graphics · Action · Cyberpunk

Until Then
Shared: Visual Novel · Pixel Graphics · LGBTQ+

Mortal Kombat 1
Shared: 2D Fighter · Action · Fighting

Melty Blood Actress Again Current Code
Shared: 2D Fighter · Action · Arcade

Your Only Move Is HUSTLE
Shared: 2D Fighter · Action · Pixel Graphics

BlazBlue Entropy Effect
Shared: Action · Pixel Graphics · 2D

BlazBlue: Chronophantasma Extend
Shared: 2D Fighter · Action · Visual Novel

THE KING OF FIGHTERS 2002 UNLIMITED MATCH
Shared: 2D Fighter · Action · Arcade

The Red Strings Club
Shared: Pixel Graphics · Cyberpunk · LGBTQ+

BAD END THEATER
Shared: LGBTQ+ · Visual Novel · Pixel Graphics

DRAGON BALL FighterZ
Shared: 2D Fighter · Action · Fighting

UNDER NIGHT IN-BIRTH II Sys:Celes
Shared: 2D Fighter · Action · Arcade

UNDER NIGHT IN-BIRTH Exe:Late[cl-r]
Shared: 2D Fighter · Action · Fighting

Stick Fight: The Game
Shared: 2D Fighter · Action · Fighting

Mortal Kombat 11
Shared: 2D Fighter · Fighting · Action

One Finger Death Punch
Shared: 2D Fighter · Action · Fighting