Games like Muddledash
Games like Muddledash include SpeedRunners, Overcooked! 2, Ultimate Chicken Horse, Brawlhalla, and PICO PARK. We matched them by the tags players give Muddledash on Steam (Indie, Racing, Casual, Local Multiplayer, and Platformer): closest matches first, and among equally close ones the better-known games.

SpeedRunners
Shared: Racing · Indie · Local Multiplayer

Overcooked! 2
Shared: Multiplayer · Casual · Local Co-Op

Ultimate Chicken Horse
Shared: Multiplayer · Platformer · Local Co-Op

Brawlhalla
Shared: Multiplayer · Casual · Local Multiplayer

PICO PARK
Shared: Multiplayer · Casual · Local Multiplayer

Pikuniku
Shared: Indie · Casual · Multiplayer

Gang Beasts
Shared: Multiplayer · Local Multiplayer · Casual

Transformice
Shared: Multiplayer · Casual · Platformer

Overcooked
Shared: Indie · Multiplayer · Local Co-Op

Party Animals
Shared: Casual · Multiplayer · Cute

Broforce
Shared: Indie · Platformer · Multiplayer

Move or Die
Shared: Local Multiplayer · Multiplayer · Indie

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

BattleBlock Theater®
Shared: Platformer · Multiplayer · Local Co-Op

Cuphead
Shared: Platformer · Indie · Local Co-Op

Duck Game
Shared: Local Multiplayer · Multiplayer · Indie

Awesomenauts
Shared: Indie · Multiplayer · Platformer

PICO PARK 2
Shared: Casual · Multiplayer · Platformer

Golf With Your Friends
Shared: Casual · Indie · Multiplayer

Lovers in a Dangerous Spacetime
Shared: Local Multiplayer · Local Co-Op · Indie

Castle Crashers®
Shared: 2D · Local Multiplayer · Multiplayer

Pummel Party
Shared: Multiplayer · Local Multiplayer · Casual

Overcooked! All You Can Eat
Shared: Multiplayer · Casual · Local Co-Op

Bread & Fred
Shared: Cute · Local Co-Op · Multiplayer