Games like Survivors 27
Games like Survivors 27 include Escape From Duckov, Borderlands 2, Risk of Rain 2, PAYDAY 2, and OUTRIDERS. We matched them by the tags players give Survivors 27 on Steam (Action, Loot, Looter Shooter, Heist, and Shooter): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Action · Looter Shooter · Shooter

Borderlands 2
Shared: Loot · Action · Shooter

Risk of Rain 2
Shared: Action · Looter Shooter · Loot

PAYDAY 2
Shared: Action · Heist · Looter Shooter

OUTRIDERS
Shared: Looter Shooter · Action · Loot

RUNNING WITH RIFLES
Shared: Action · Top-Down Shooter · Military

Warframe
Shared: Looter Shooter · Action · Third-Person Shooter

Tom Clancy’s The Division® 2
Shared: Looter Shooter · Action · Shooter

Tom Clancy’s The Division™
Shared: Looter Shooter · Action · Shooter

Borderlands 3
Shared: Looter Shooter · Loot · Action

The First Descendant
Shared: Looter Shooter · Action · Shooter

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third-Person Shooter

Tiny Tina's Wonderlands
Shared: Loot · Looter Shooter · Shooter

Call of Duty®
Shared: Action · Shooter · Military

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Third-Person Shooter

Arma 3
Shared: Action · Shooter · Military

Aimlabs
Shared: Action · Shooter · Score Attack

Destiny 2
Shared: Looter Shooter · Loot · Shooter

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

HELLDIVERS™ 2
Shared: Action · Shooter · Third-Person Shooter

Call of Duty®: Modern Warfare® II
Shared: Action · Shooter · Military

ZERO Sievert
Shared: Looter Shooter · Action · Top-Down

Tom Clancy's Ghost Recon® Breakpoint
Shared: Shooter · Action · Military

Borderlands Game of the Year Enhanced
Shared: Loot · Shooter · Action