Games like Drop Command
Games like Drop Command include Arma Reforger, Arma 3, MechWarrior 5: Mercenaries, Titanfall® 2, and Mount & Blade II: Bannerlord. We matched them by the tags players give Drop Command on Steam (Mechs, Simulation, Shooter, Real Time Tactics, and 4X): closest matches first, and among equally close ones the better-known games.

Arma Reforger
Shared: Simulation · Shooter · FPS

Arma 3
Shared: Shooter · Simulation · Action

MechWarrior 5: Mercenaries
Shared: Mechs · Simulation · Shooter

Titanfall® 2
Shared: Mechs · Shooter · FPS

Mount & Blade II: Bannerlord
Shared: Simulation · Sandbox · Character Customization

Freeman: Guerrilla Warfare
Shared: Shooter · FPS · Action

Ravenfield
Shared: Shooter · FPS · Sandbox

鬼谷八荒 Tale of Immortal
Shared: Simulation · Sandbox · Singleplayer

KovaaK's
Shared: Simulation · Shooter · Action

Aimlabs
Shared: Shooter · Simulation · FPS

MechWarrior 5: Clans
Shared: Simulation · Mechs · Shooter

Kenshi
Shared: Simulation · Sandbox · Open World

OPERATOR
Shared: Shooter · Simulation · FPS

Crusader Kings III
Shared: Simulation · Character Customization · Strategy

Gray Zone Warfare
Shared: Simulation · FPS · Shooter

Hot Dogs, Horseshoes & Hand Grenades
Shared: Shooter · Simulation · Sandbox

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

Garry's Mod
Shared: Sandbox · Simulation · FPS

Rising Front
Shared: Simulation · Sandbox · Shooter

Fallout 4
Shared: Shooter · Singleplayer · Open World

Far Cry 3
Shared: Shooter · FPS · Action

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

Schedule I
Shared: Simulation · Management · Action

Hell Let Loose
Shared: Shooter · FPS · Simulation