Games like ASTROSMASH 1981
Games like ASTROSMASH 1981 include Planes, Bullets and Vodka, Broforce, UFO 50, METAL SLUG, and Cyberhunt. We matched them by the tags players give ASTROSMASH 1981 on Steam (Action, Shoot 'Em Up, Arcade, Retro, and Casual): closest matches first, and among equally close ones the better-known games.

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Casual

Broforce
Shared: Action · 2D · Pixel Graphics

UFO 50
Shared: Action · Retro · Arcade

METAL SLUG
Shared: Action · Arcade · Shoot 'Em Up

Cyberhunt
Shared: Action · Shoot 'Em Up · Casual

Retrowave
Shared: Retro · Action · Casual

LUFTRAUSERS
Shared: Action · Arcade · Shoot 'Em Up

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Action

Huntdown
Shared: Action · Shoot 'Em Up · Shooter

METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up

Timberman
Shared: Action · Casual · Arcade

ARCADE GAME SERIES: GALAGA
Shared: Action · Arcade · Shoot 'Em Up

Distant Space
Shared: Shoot 'Em Up · Arcade · Action

Vampire Survivors
Shared: Action · Arcade · 2D

Blazing Chrome
Shared: Action · Retro · Shoot 'Em Up

METAL SLUG 3
Shared: Action · Arcade · Retro

Duck Game
Shared: Action · 2D · Pixel Graphics

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · Action · Casual

ZeroRanger
Shared: Shoot 'Em Up · Action · Arcade

Streets of Rage 4
Shared: Action · Arcade · 2D

METAL SLUG 2
Shared: Action · Arcade · Shoot 'Em Up

PARTICLE MACE
Shared: Action · Arcade · Shoot 'Em Up

Kung Fury: Street Rage - Ultimate Edition
Shared: Arcade · Action · Retro

Door Kickers: Action Squad
Shared: Action · Retro · Shooter