War Thunder is a free-to-play military combat game built around battles that bring aircraft, helicopters, ground vehicles, and naval ships into the same arena. Its large vehicle roster and historical setting span the early twentieth century through modern combat units, while maps draw on major historical theaters. Rather than focusing on one kind of vehicle, it lets players take roles ranging from attacking from a bomber turret to defending against aircraft with anti-aircraft guns or striking ships from a fast attack boat.
That variety shapes the experience: vehicles can support one another in competitive battles, with different combat situations and difficulty settings catering to a range of play styles and experience levels. The game also offers PvE campaigns and solo missions alongside PvP, and its listed modes include multiplayer, co-op, and online play. Cross-platform gameplay places Windows PC players on the same server as players on several console platforms, so the PC experience is part of a wider shared player pool rather than a PC-only match environment.
It also identifies War Thunder as an MMO with cross-platform multiplayer, so a Steam player figure should be understood as a view of activity on that service, not a complete measure of everyone who can join the shared game.