Games like Massive Effect
Games like Massive Effect include Chicken Invaders Universe, CS2D, Cyberhunt, Planes, Bullets and Vodka, and Timberman. We matched them by the tags players give Massive Effect on Steam (Action, Casual, Indie, Shooter, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.
Chicken Invaders Universe
Shared: Action · Shooter · Top-Down Shooter
CS2D
Shared: Action · Shooter · Casual
Cyberhunt
Shared: Action · Indie · Casual
Planes, Bullets and Vodka
Shared: Action · Casual · Shooter
Timberman
Shared: Casual · Indie · Action
12 is Better Than 6
Shared: Action · Shooter · Top-Down Shooter
Vampire Survivors
Shared: Indie · 2D · Casual
Starblast
Shared: Action · Indie · Casual
Bit Blaster XL
Shared: Shooter · Action · Arcade
Halo: Spartan Assault
Shared: Action · Top-Down Shooter · Shooter
Hotline Miami
Shared: Action · Indie · Top-Down
Escape From Duckov
Shared: Action · Top-Down Shooter · Shooter
Defy Gravity Extended
Shared: Indie · Action · 2D
Broforce
Shared: Action · 2D · Indie
ShellShock Live
Shared: Action · Casual · Shooter
Sky Force Reloaded
Shared: Arcade · Action · Top-Down Shooter
Sixtar Gate: STARTRAIL
Shared: Action · Casual · Arcade
BALL x PIT
Shared: Action · Arcade · Top-Down Shooter
My Friend Pedro
Shared: Action · Indie · Shooter
RIP - Trilogy™
Shared: Casual · Indie · Action
SAS: Zombie Assault 4
Shared: Action · Top-Down Shooter · Shooter
Polygoneer
Shared: Casual · Action · Indie
A Dance of Fire and Ice
Shared: Indie · 2D · Arcade
Zombieville USA 3D
Shared: Action · Arcade · Shooter