Games like Cross and Gun
Games like Cross and Gun include Ready or Not, DOOM, Bodycam, METRO 2033 Redux, and Receiver 2. We matched them by the tags players give Cross and Gun on Steam (Horror, FPS, Action Roguelike, Simulation, and Puzzle): closest matches first, and among equally close ones the better-known games.

Ready or Not
Shared: FPS · Horror · Realistic

DOOM
Shared: FPS · Action · Demons

Bodycam
Shared: FPS · Horror · Realistic

METRO 2033 Redux
Shared: FPS · Horror · Atmospheric

Receiver 2
Shared: FPS · Simulation · Action

Inside the Backrooms
Shared: Horror · Puzzle · Psychological Horror

WARDOGS
Shared: FPS · Action · Simulation

In Sound Mind
Shared: Horror · Puzzle · Psychological Horror

Warhammer 40,000: Darktide
Shared: FPS · Horror · Combat

METRO Last Light Redux
Shared: FPS · Horror · Action

Atomic Heart
Shared: FPS · Horror · Action

DOOM Eternal
Shared: FPS · Action · Demons

Aimlabs
Shared: FPS · Simulation · Action

Half-Life: Alyx
Shared: FPS · Horror · Action

Little Nightmares II
Shared: Horror · Puzzle · Psychological Horror

Trepang2
Shared: FPS · Horror · Action

F.E.A.R.
Shared: Horror · FPS · Action

Metro Exodus
Shared: FPS · Horror · Action

KovaaK's
Shared: FPS · Simulation · Action

SCP: Fragmented Minds
Shared: Horror · FPS · Psychological Horror

Poppy Playtime
Shared: Horror · Puzzle · Psychological Horror

Sally Face - Episode One
Shared: Horror · Psychological Horror · Puzzle

HOLE
Shared: FPS · Horror · Psychological Horror

Little Nightmares
Shared: Horror · Puzzle · Atmospheric