Games like Flame Up
Games like Flame Up include Brawlhalla, Stick Fight: The Game, A Few Quick Matches, Rivals of Aether, and Your Only Move Is HUSTLE. We matched them by the tags players give Flame Up on Steam (Casual, 2D Fighter, Combat, Minimalist, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: 2D Fighter · Casual · PvP

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

A Few Quick Matches
Shared: 2D Fighter · Casual · Pixel Graphics

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

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

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

Broforce
Shared: Pixel Graphics · Action · 2D

Street Fighter™ 6
Shared: 2D Fighter · PvP · Action

Pixel Gun 3D: PC Edition
Shared: PvP · Pixel Graphics · Combat

Nidhogg
Shared: 2D Fighter · Pixel Graphics · PvP

GUILTY GEAR -STRIVE-
Shared: 2D Fighter · PvP · Action

GrandChase
Shared: PvP · Casual · Action

MARVEL Tōkon: Fighting Souls
Shared: 2D Fighter · Casual · Action

Timberman
Shared: Casual · Pixel Graphics · Action

Skullgirls 2nd Encore
Shared: 2D Fighter · Stylized · Indie

ROUNDS
Shared: 2D Fighter · PvP · Action

Rivals of Aether II
Shared: 2D Fighter · Combat · Action

DRAGON BALL: Sparking! ZERO
Shared: PvP · Combat · Action

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

Forestrike
Shared: 2D Fighter · Action · Pixel Graphics

TowerFall Ascension
Shared: 2D Fighter · Pixel Graphics · Action

FOOTSIES Rollback Edition
Shared: 2D Fighter · Casual · PvP

Vampire Survivors
Shared: Pixel Graphics · Casual · 2D

Little Fighter 2 Remastered
Shared: 2D Fighter · Action · Minimalist