Games like Behind the Masks
Games like Behind the Masks include Town of Salem, The Escapists 2, Among Us, Plague Inc: Evolved, and Terraria. We matched them by the tags players give Behind the Masks on Steam (Strategy, Social Deduction, Text-Based, Logic, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Town of Salem
Shared: Strategy · Social Deduction · Multiplayer

The Escapists 2
Shared: Strategy · Multiplayer · Pixel Graphics

Among Us
Shared: Social Deduction · Multiplayer · 2D

Plague Inc: Evolved
Shared: Strategy · Multiplayer · Indie

Terraria
Shared: Multiplayer · 2D · Pixel Graphics

Sid Meier’s Civilization® VI
Shared: Strategy · Multiplayer · PvP

Total War: WARHAMMER II
Shared: Strategy · Multiplayer · Fantasy

Mount & Blade II: Bannerlord
Shared: Strategy · Multiplayer · PvP

LOCKDOWN Protocol
Shared: Social Deduction · Multiplayer · Dialogue Heavy

ShellShock Live
Shared: Strategy · Multiplayer · 2D

Rusted Warfare - RTS
Shared: Strategy · Multiplayer · 2D

Forts
Shared: Strategy · Multiplayer · 2D

Bloons TD 6
Shared: Strategy · Multiplayer · 2D

Backpack Battles
Shared: Strategy · PvP · Multiplayer

Buckshot Roulette
Shared: Multiplayer · Strategy · Indie

Wargroove
Shared: Strategy · Pixel Graphics · Strategy RPG

PUBG: BATTLEGROUNDS
Shared: Multiplayer · PvP · Strategy

Hero's Hour
Shared: Strategy · Pixel Graphics · Strategy RPG

The Escapists
Shared: Strategy · Pixel Graphics · 2D

Magic: The Gathering Arena
Shared: Strategy · PvP · Multiplayer

Company of Heroes 2
Shared: Strategy · Multiplayer · PvP

Tooth and Tail
Shared: Strategy · Multiplayer · Pixel Graphics

Blood Bowl 2: Legendary Edition (Classic)
Shared: Strategy · Multiplayer · PvP

Where Winds Meet
Shared: Multiplayer · Strategy · PvP