Games like Astro Duel 2
Games like Astro Duel 2 include Brawlhalla, Stick Fight: The Game, Duck Game, Rivals of Aether, and Broforce. We matched them by the tags players give Astro Duel 2 on Steam (Platformer, Top-Down Shooter, Local Multiplayer, 2D Fighter, and Funny): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: 2D Fighter · Platformer · Local Multiplayer

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

Duck Game
Shared: Local Multiplayer · Funny · Platformer

Rivals of Aether
Shared: 2D Fighter · Local Multiplayer · Platformer

Broforce
Shared: Platformer · Local Multiplayer · Pixel Graphics

TowerFall Ascension
Shared: Local Multiplayer · 2D Fighter · Platformer

Move or Die
Shared: Local Multiplayer · Funny · Platformer

BattleBlock Theater®
Shared: Platformer · Funny · Local Multiplayer

Ultimate Chicken Horse
Shared: Platformer · Funny · Local Multiplayer

SpeedRunners
Shared: Local Multiplayer · Platformer · 4 Player Local

Rivals of Aether II
Shared: 2D Fighter · Local Multiplayer · 4 Player Local

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

Rayman® Legends
Shared: Platformer · Local Multiplayer · 4 Player Local

ROUNDS
Shared: Local Multiplayer · 2D Fighter · PvP

Bopl Battle
Shared: 2D Fighter · 4 Player Local · Funny

SpiderHeck
Shared: Local Multiplayer · 2D Fighter · Funny

Pizza Tower
Shared: Platformer · 2D Platformer · Funny

Slap City
Shared: Platformer · 2D Fighter · Local Multiplayer

Anomaly Agent
Shared: Platformer · 2D Platformer · 2D Fighter

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · Indie

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

Nidhogg
Shared: Local Multiplayer · 2D Fighter · Pixel Graphics

Gang Beasts
Shared: Funny · Local Multiplayer · PvP

SANABI
Shared: 2D Platformer · Platformer · Pixel Graphics