Games like Super Shooter
Games like Super Shooter include Portal 2, Portal, Half-Life 2, Bright Memory: Infinite, and Black Mesa. We matched them by the tags players give Super Shooter on Steam (Precision Platformer, Stylized, Sci-fi, First-Person, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Singleplayer · First-Person · Female Protagonist

Portal
Shared: First-Person · Sci-fi · Singleplayer

Half-Life 2
Shared: Sci-fi · Singleplayer · FPS

Bright Memory: Infinite
Shared: Singleplayer · Indie · Sci-fi

Black Mesa
Shared: Sci-fi · First-Person · Singleplayer

Neon White
Shared: FPS · Precision Platformer · Shooter

Bright Memory
Shared: First-Person · Shooter · FPS

BioShock Infinite
Shared: First-Person · Shooter · Singleplayer

Titanfall® 2
Shared: Singleplayer · FPS · Shooter

Half-Life: Alyx
Shared: FPS · Singleplayer · First-Person

Call of Duty®: Black Ops III
Shared: First-Person · Shooter · Singleplayer

Halo Infinite
Shared: Singleplayer · First-Person · Shooter

Half-Life
Shared: Sci-fi · Singleplayer · FPS

Half-Life: Opposing Force
Shared: Sci-fi · Singleplayer · FPS

Half-Life: Blue Shift
Shared: Sci-fi · Singleplayer · FPS

RoboCop: Rogue City
Shared: First-Person · Singleplayer · FPS

STAR WARS™ Battlefront™ II
Shared: Singleplayer · Sci-fi · Shooter

SUPERHOT
Shared: Singleplayer · Indie · First-Person

Severed Steel
Shared: FPS · First-Person · Shooter

Call of Duty®
Shared: Singleplayer · Shooter · FPS

Battlefield™ 2042
Shared: Singleplayer · Shooter · FPS

DOOM
Shared: FPS · First-Person · Shooter

Ready or Not
Shared: Singleplayer · Shooter · FPS

Celeste
Shared: Precision Platformer · Indie · Singleplayer