Games like System Invaders
Games like System Invaders include Cyberhunt, Planes, Bullets and Vodka, Retrowave, UFO 50, and Hotline Miami. We matched them by the tags players give System Invaders on Steam (Action, Indie, Casual, Shoot 'Em Up, and Retro): closest matches first, and among equally close ones the better-known games.

Cyberhunt
Shared: Action · Indie · Casual

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

Retrowave
Shared: Indie · Casual · Action

UFO 50
Shared: Indie · Action · Retro

Hotline Miami
Shared: Action · Indie · Retro

LUFTRAUSERS
Shared: Indie · Action · Shoot 'Em Up

SAMOLIOTIK
Shared: Indie · Action · Casual

Octogeddon
Shared: Action · Indie · Shoot 'Em Up

Chicken Invaders 5
Shared: Action · Indie · Casual

Polygoneer
Shared: Indie · Action · Casual

Music Racer
Shared: Indie · Action · Casual

RADical ROACH Remastered
Shared: Action · Indie · Casual

State of Anarchy
Shared: Action · Indie · Casual

ZeroRanger
Shared: Indie · Shoot 'Em Up · Action

Timberman
Shared: Casual · Indie · Action

Juicy Realm
Shared: Action · Indie · Casual

TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Indie · Action · Casual

Witch It
Shared: Casual · Indie · Action

Blazing Chrome
Shared: Action · Retro · Indie

Trip to Vinelands
Shared: Action · Indie · Retro

Stellar 2D
Shared: Indie · Action · Casual

Distant Space 2
Shared: Action · Indie · Casual

Megabonk
Shared: Indie · Action · Casual

Dead Bits
Shared: Action · Indie · Casual