Games like Legion 51
Games like Legion 51 include Town of Salem, Plague Inc: Evolved, Chinese Parents, Dead Age, and Russian Life Simulator. We matched them by the tags players give Legion 51 on Steam (Action, Casual, Indie, Strategy, and Simulation): closest matches first, and among equally close ones the better-known games.

Town of Salem
Shared: Strategy · Indie · Casual

Plague Inc: Evolved
Shared: Strategy · Indie · Simulation

Chinese Parents
Shared: Casual · Simulation · Memes

Dead Age
Shared: Strategy · Casual · Action

Russian Life Simulator
Shared: Simulation · Memes · Action

Plebby Quest: The Crusades
Shared: Casual · Strategy · Indie

Home Behind
Shared: Indie · Casual · Survival

Mount & Blade II: Bannerlord
Shared: Strategy · Action · RPG

DOKA 2 KISHKI EDITION
Shared: Action · Indie · Memes

Door Kickers
Shared: Strategy · Action · Simulation

Game Dev Tycoon
Shared: Indie · Casual · Simulation

Dictators:No Peace Countryballs
Shared: Strategy · Casual · Simulation

911 Operator
Shared: Strategy · Simulation · Indie

Kenshi
Shared: Survival · Simulation · RPG

The Escapists
Shared: Strategy · Action · Indie

PUBG: BATTLEGROUNDS
Shared: Survival · Action · Tactical

Goat Simulator
Shared: Simulation · Casual · Action

Mini Motorways
Shared: Casual · Strategy · Simulation

Achievement Clicker
Shared: Casual · Indie · Action

Bomber Crew
Shared: Simulation · Strategy · Indie

Freeman: Guerrilla Warfare
Shared: Action · Strategy · Indie

Total Tank Simulator
Shared: Action · Strategy · Simulation

Police Stories
Shared: Action · Strategy · Simulation

Formata
Shared: Action · Strategy · Indie