Games like Nidhogg
Games like Nidhogg include Rivals of Aether, Stick Fight: The Game, ROUNDS, DRAGON BALL FighterZ, and Brawlhalla. We matched them by the tags players give Nidhogg on Steam (eSports, Local Multiplayer, Pixel Graphics, Swordplay, and 2D Fighter): closest matches first, and among equally close ones the better-known games.

Rivals of Aether
Shared: Pixel Graphics · 2D Fighter · Local Multiplayer

Stick Fight: The Game
Shared: Local Multiplayer · 2D Fighter · Fighting

ROUNDS
Shared: Local Multiplayer · 2D Fighter · Fighting

DRAGON BALL FighterZ
Shared: Local Multiplayer · 2D Fighter · Fighting

Brawlhalla
Shared: 2D Fighter · Local Multiplayer · Fighting

Duck Game
Shared: Local Multiplayer · Pixel Graphics · Multiplayer

Street Fighter™ 6
Shared: 2D Fighter · Fighting · Local Multiplayer

TEKKEN 7
Shared: Local Multiplayer · Fighting · Action

Lethal League Blaze
Shared: 2D Fighter · Indie · Local Multiplayer

Lethal League
Shared: Local Multiplayer · 2D Fighter · Fighting

TEKKEN 8
Shared: Local Multiplayer · eSports · Fighting

Broforce
Shared: Pixel Graphics · Action · Local Multiplayer

Ultra Street Fighter® IV
Shared: Local Multiplayer · 2D Fighter · Fighting

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

TowerFall Ascension
Shared: Local Multiplayer · 2D Fighter · Pixel Graphics

Nidhogg 2
Shared: Local Multiplayer · Indie · Pixel Graphics

SpeedRunners
Shared: Local Multiplayer · Indie · Multiplayer

SpiderHeck
Shared: Local Multiplayer · 2D Fighter · Swordplay

Gang Beasts
Shared: Local Multiplayer · Multiplayer · Action

Skullgirls 2nd Encore
Shared: 2D Fighter · Fighting · Indie

Move or Die
Shared: Local Multiplayer · Multiplayer · Action

Mortal Kombat 11
Shared: Local Multiplayer · Fighting · 2D Fighter

BlazBlue: Cross Tag Battle
Shared: 2D Fighter · Local Multiplayer · eSports

Fraymakers
Shared: 2D Fighter · Indie · Pixel Graphics