Games like Reef Rumble
Games like Reef Rumble include Stick Fight: The Game, Bopl Battle, Gang Beasts, Party Animals, and Among Us. We matched them by the tags players give Reef Rumble on Steam (Spectacle fighter, Multiplayer, 2D Fighter, Funny, and Physics): closest matches first, and among equally close ones the better-known games.

Stick Fight: The Game
Shared: Multiplayer · Funny · 2D Fighter

Bopl Battle
Shared: Multiplayer · 2D Fighter · Funny

Gang Beasts
Shared: Multiplayer · Funny · Physics

Party Animals
Shared: Multiplayer · Funny · Cute

Among Us
Shared: Multiplayer · Funny · 2D

SpiderHeck
Shared: 2D Fighter · Physics · Funny

ROUNDS
Shared: Multiplayer · 2D Fighter · PvP

Human Fall Flat
Shared: Multiplayer · Funny · Physics

Garry's Mod
Shared: Multiplayer · Physics · Funny

Duck Game
Shared: Multiplayer · Funny · 2D

Brawlhalla
Shared: Multiplayer · 2D Fighter · Local Multiplayer

Draw & Guess
Shared: Multiplayer · Funny · 2D

Move or Die
Shared: Multiplayer · Funny · 2D

Your Only Move Is HUSTLE
Shared: 2D Fighter · Spectacle fighter · Action

Castle Crashers®
Shared: 2D · Funny · Multiplayer

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

FATAL FURY: City of the Wolves
Shared: 2D Fighter · Multiplayer · Spectacle fighter

Overcooked! 2
Shared: Multiplayer · Funny · Local Multiplayer

MECCHA CHAMELEON
Shared: Multiplayer · Funny · Casual

Stick It to the Stickman
Shared: Multiplayer · 2D Fighter · Funny

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

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

SpeedRunners
Shared: Multiplayer · Local Multiplayer · Funny

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