Games like Nitronauts
Games like Nitronauts include Pummel Party, Ultimate Chicken Horse, Overcooked! 2, Party Animals, and Stick Fight: The Game. We matched them by the tags players give Nitronauts on Steam (4 Player Local, Local Multiplayer, Party Game, Multiplayer, and Local Co-Op): closest matches first, and among equally close ones the better-known games.

Pummel Party
Shared: 4 Player Local · Multiplayer · Party Game

Ultimate Chicken Horse
Shared: Multiplayer · Party Game · Local Co-Op

Overcooked! 2
Shared: Multiplayer · Local Co-Op · 4 Player Local

Party Animals
Shared: Multiplayer · Party Game · Co-op

Stick Fight: The Game
Shared: Local Multiplayer · Multiplayer · 4 Player Local

Gang Beasts
Shared: Multiplayer · Local Multiplayer · Co-op

Castle Crashers®
Shared: 4 Player Local · Co-op · Online Co-Op

Brawlhalla
Shared: Multiplayer · Local Multiplayer · Co-op

Among Us
Shared: Multiplayer · Party Game · Online Co-Op

Move or Die
Shared: Local Multiplayer · Multiplayer · 4 Player Local

Bopl Battle
Shared: 4 Player Local · Multiplayer · Local Co-Op

PICO PARK
Shared: Multiplayer · Co-op · Local Multiplayer

PUBG: BATTLEGROUNDS
Shared: Multiplayer · PvP · Battle Royale

Unrailed!
Shared: Multiplayer · Local Multiplayer · Co-op

Broforce
Shared: Co-op · Local Co-Op · Action

Overcooked
Shared: Multiplayer · Local Co-Op · Local Multiplayer

LEGO® Party!
Shared: Party Game · Local Multiplayer · 4 Player Local

Duck Game
Shared: Local Multiplayer · Multiplayer · 4 Player Local

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

It Takes Two
Shared: Multiplayer · Co-op · Local Co-Op

Party Panic
Shared: 4 Player Local · Multiplayer · Local Multiplayer

Rubber Bandits
Shared: Party Game · Multiplayer · PvP

Tricky Towers
Shared: Party Game · Multiplayer · Local Multiplayer

SpeedRunners
Shared: Local Multiplayer · Multiplayer · 4 Player Local