Games like BattleStick 2
Games like BattleStick 2 include Brawlhalla, Stick Fight: The Game, Marvel Rivals, NARAKA: BLADEPOINT, and ROUNDS. We matched them by the tags players give BattleStick 2 on Steam (Action, Massively Multiplayer, Free to Play, 2D, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: Free to Play · Multiplayer · 2D Fighter

Stick Fight: The Game
Shared: Action · Multiplayer · Fighting

Marvel Rivals
Shared: Free to Play · Multiplayer · Action

NARAKA: BLADEPOINT
Shared: Action · Multiplayer · Massively Multiplayer

ROUNDS
Shared: Multiplayer · Action · 2D Fighter

Gang Beasts
Shared: Action · Multiplayer · Physics

Delta Force
Shared: Free to Play · Massively Multiplayer · Multiplayer

Apex Legends™
Shared: Free to Play · Multiplayer · Action

SMITE®
Shared: Free to Play · Action · Multiplayer

Garry's Mod
Shared: Multiplayer · Physics · Casual

ShellShock Live
Shared: Action · Multiplayer · 2D

KurtzPel
Shared: Free to Play · Action · Multiplayer

War Thunder
Shared: Action · Free to Play · Multiplayer

SpiderHeck
Shared: 2D Fighter · Physics · Fighting

Once Human
Shared: Free to Play · Action · Multiplayer

GrandChase
Shared: Action · Free to Play · Casual

Paladins®
Shared: Free to Play · Action · Multiplayer

Rivals of Aether
Shared: 2D Fighter · Multiplayer · Fighting

JoJo's Bizarre Adventure: All-Star Battle R
Shared: Action · Multiplayer · Fighting

Party Animals
Shared: Multiplayer · Action · Casual

Duck Game
Shared: Action · Multiplayer · 2D

Destiny 2
Shared: Free to Play · Multiplayer · Massively Multiplayer

Human Fall Flat
Shared: Multiplayer · Physics · Action

Broforce
Shared: Action · 2D · Multiplayer