MMOs offering players the opportunity to fight using a variety of war machines are extremely popular. The Russian studio Gaijin Entertainment, which is famous primarily for War Thunder, Birds of Steel and Star Conflict, is definitely among the developers specializing in these types of titles. The game Crossout is another work of this studio, released in 2017.
Crossout allows players to build war machines by themselves and then improve, develop and arm them. An interesting twist of this game, however, is its setting - the game was set in the realities of the post-apocalypse, and all vehicles are powered by, among others, wind power. Interesting improvements and additions to the machines can be obtained by buying a Crossout Premium account.