Games like Steel Thunder
Games like Steel Thunder include War Thunder, Gunner, HEAT, PC!, Arma 3, Men of War: Assault Squad 2, and Arma Reforger. We matched them by the tags players give Steel Thunder on Steam (Simulation, Tanks, Action, Military, and Retro): closest matches first, and among equally close ones the better-known games.

War Thunder
Shared: Simulation · Action · Vehicular Combat

Gunner, HEAT, PC!
Shared: Simulation · Tanks · Military

Arma 3
Shared: Action · Military · Simulation

Men of War: Assault Squad 2
Shared: Simulation · Action · War

Arma Reforger
Shared: Simulation · Military · Action

WARNO
Shared: Military · Tanks · Cold War

Hell Let Loose: Vietnam
Shared: Simulation · Action · Military

Battlefield™ 2042
Shared: Military · Action · War

Ravenfield
Shared: Military · War · Action

VTOL VR
Shared: Simulation · Military · Action

Project Wingman
Shared: Action · Military · War

FPV Kamikaze Drone
Shared: Simulation · Action · War

Sea Power : Naval Combat in the Missile Age
Shared: Simulation · Military · Cold War

Battlefield™ 6
Shared: Military · Action · War

Tiny Combat Arena
Shared: Simulation · Cold War · Retro

Arma 2: Operation Arrowhead
Shared: Simulation · Action · Military

Call of Duty®
Shared: Action · Military · Singleplayer

UBOAT
Shared: Simulation · Military · War

Squad 44
Shared: Simulation · Military · Action

Hell Let Loose
Shared: Military · Action · War

ARMA: Cold War Assault Remastered
Shared: Simulation · Action · Military

Call to Arms
Shared: Military · Action · Simulation

Total Tank Simulator
Shared: Simulation · Action · Tanks

Nuclear Option
Shared: Simulation · Action · Military