Games like RaceWorms
Games like RaceWorms include SpeedRunners, Move or Die, Duck Game, Gang Beasts, and Brawlhalla. We matched them by the tags players give RaceWorms on Steam (Multiplayer, Indie, Action, 2D Platformer, and Local Multiplayer): closest matches first, and among equally close ones the better-known games.

SpeedRunners
Shared: Multiplayer · Indie · Local Multiplayer

Move or Die
Shared: Multiplayer · Action · Local Multiplayer

Duck Game
Shared: Multiplayer · Action · Local Multiplayer

Gang Beasts
Shared: Multiplayer · Action · Funny

Brawlhalla
Shared: Multiplayer · 2D Platformer · Casual

BattleBlock Theater®
Shared: Multiplayer · Funny · Comedy

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

Human Fall Flat
Shared: Multiplayer · Funny · Action

Broforce
Shared: Action · Multiplayer · Indie

Rocket League®
Shared: Multiplayer · Competitive · Action

Overcooked! 2
Shared: Multiplayer · Casual · Indie

Pizza Tower
Shared: Indie · 2D Platformer · Fast-Paced

Party Animals
Shared: Multiplayer · Casual · Funny

Ultimate Chicken Horse
Shared: Multiplayer · Funny · Local Multiplayer

Pummel Party
Shared: Multiplayer · Funny · Local Multiplayer

Among Us
Shared: Multiplayer · Funny · Local Multiplayer

MECCHA CHAMELEON
Shared: Multiplayer · Casual · Funny

Golf With Your Friends
Shared: Multiplayer · Indie · Casual

Pikuniku
Shared: Indie · Multiplayer · Casual

Timberman
Shared: Indie · Multiplayer · Casual

Witch It
Shared: Multiplayer · Indie · Action

Mount Your Friends
Shared: Multiplayer · Indie · Funny

Rivals of Aether
Shared: Multiplayer · Indie · Local Multiplayer

Who's Your Daddy?!
Shared: Multiplayer · Funny · Indie