Games like Sky Battles
Games like Sky Battles include Project Wingman, Mount & Blade II: Bannerlord, Plague Inc: Evolved, Bomber Crew, and Total Tank Simulator. We matched them by the tags players give Sky Battles on Steam (Action, Indie, Strategy, Flight, and Simulation): closest matches first, and among equally close ones the better-known games.

Project Wingman
Shared: Action · Flight · Indie

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

Plague Inc: Evolved
Shared: Strategy · Indie · Simulation

Bomber Crew
Shared: Strategy · Simulation · Flight

Total Tank Simulator
Shared: Action · Strategy · Simulation

War Thunder
Shared: Action · Simulation · Flight

KovaaK's
Shared: Action · Indie · Simulation

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

House Flipper
Shared: Simulation · Multiplayer · Singleplayer

Buckshot Roulette
Shared: Strategy · Multiplayer · Indie

The Escapists
Shared: Strategy · Indie · Action

Arma 3
Shared: Action · Simulation · Multiplayer

Feed and Grow: Fish
Shared: Simulation · Action · Indie

Shieldwall
Shared: Action · Strategy · Simulation

SMITE®
Shared: Action · Strategy · Multiplayer

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Flight · Arcade · Action

STAR WARS™: Squadrons
Shared: Flight · Action · Multiplayer

Microsoft Flight Simulator X: Steam Edition
Shared: Flight · Simulation · Multiplayer

Door Kickers
Shared: Strategy · Action · Indie

The Crew™ 2
Shared: Action · Flight · Multiplayer

Police Stories
Shared: Action · Strategy · Simulation

Drug Dealer Simulator
Shared: Action · Indie · Simulation

Gang Beasts
Shared: Action · Multiplayer · Indie

Wreckfest
Shared: Simulation · Action · Indie

