Games like Underdog Arena
Games like Underdog Arena include Duck Game, Rivals of Aether, TowerFall Ascension, Crawl, and Broforce. We matched them by the tags players give Underdog Arena on Steam (Action, Indie, Pixel Graphics, 4 Player Local, and Local Multiplayer): closest matches first, and among equally close ones the better-known games.

Duck Game
Shared: Action · Pixel Graphics · Local Multiplayer

Rivals of Aether
Shared: Pixel Graphics · Indie · Local Multiplayer

TowerFall Ascension
Shared: Indie · Action · Local Multiplayer

Crawl
Shared: Pixel Graphics · 4 Player Local · Local Multiplayer

Broforce
Shared: Action · Pixel Graphics · Indie

Timberman VS
Shared: Action · Indie · Local Multiplayer

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

A Few Quick Matches
Shared: Indie · Action · 4 Player Local

Timberman
Shared: Indie · Pixel Graphics · Action

SpeedRunners
Shared: Indie · Local Multiplayer · Action

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

Hotline Miami
Shared: Action · Indie · Pixel Graphics

Katana ZERO
Shared: Action · Pixel Graphics · Indie

Move or Die
Shared: Action · Local Multiplayer · Indie

UFO 50
Shared: Indie · Pixel Graphics · Action

Rivals of Aether II
Shared: Indie · Action · Local Multiplayer

Vampire Survivors
Shared: Pixel Graphics · Indie · Action

Nidhogg
Shared: Pixel Graphics · Local Multiplayer · Indie

Overcooked! 2
Shared: 4 Player Local · Indie · Local Multiplayer

SANABI
Shared: Action · Pixel Graphics · Indie

Fraymakers
Shared: Indie · Action · Pixel Graphics

Lethal League
Shared: Indie · Local Multiplayer · Action

Rhythm Doctor
Shared: Pixel Graphics · Indie · Action

Gravity Circuit
Shared: Action · Indie · Pixel Graphics