Games like StingerEP1
Games like StingerEP1 include HELLDIVERS™ 2, STAR WARS™ Battlefront™ II, STAR WARS™ Battlefront II (Classic, 2005), Half-Life 2, and Halo Infinite. We matched them by the tags players give StingerEP1 on Steam (Action, Shooter, 2D Platformer, Top-Down, and Sci-fi): closest matches first, and among equally close ones the better-known games.

HELLDIVERS™ 2
Shared: Shooter · Action · PvE

STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Singleplayer

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Sci-fi

Half-Life 2
Shared: Action · Sci-fi · Shooter

Halo Infinite
Shared: Shooter · Action · Singleplayer

BioShock Infinite
Shared: Action · Shooter · Singleplayer

Halo: Spartan Assault
Shared: Action · Sci-fi · Shooter

Black Mesa
Shared: Action · Sci-fi · Shooter

Warhammer 40,000: Space Marine 2
Shared: Action · PvE · Sci-fi

Titanfall® 2
Shared: Shooter · Action · Singleplayer

Dead Space (2008)
Shared: Action · Sci-fi · Space

The Callisto Protocol™
Shared: Sci-fi · Shooter · Space

STAR WARS™ Republic Commando™
Shared: Action · Shooter · Sci-fi

Deep Rock Galactic
Shared: PvE · Shooter · Action

Halo: Campaign Evolved
Shared: Action · Shooter · Sci-fi

EARTH DEFENSE FORCE 6
Shared: Action · Shooter · Sci-fi

Dead Space
Shared: Sci-fi · Shooter · Space

Mass Effect™ Legendary Edition
Shared: Sci-fi · Action · Singleplayer

Half-Life
Shared: Sci-fi · Shooter · Action

DOOM
Shared: Action · Shooter · Sci-fi

Crysis Remastered
Shared: Action · Shooter · Sci-fi

Half-Life: Blue Shift
Shared: Action · Shooter · Sci-fi

Half-Life: Opposing Force
Shared: Action · Shooter · Sci-fi

Jump Space
Shared: PvE · Sci-fi · Action