: Version 4.13.1m is often used as a stable base for massive community mods like BAT (B.A.T.) or VP Modpack . These add hundreds of aircraft and ships that aren't in the original bundle.
: Most digital versions come pre-patched to a relatively high version (like 4.12 or 4.13). Before adding anything, launch the game and check the bottom left corner of the main menu to see your current version. Il-2 Sturmovik: 1946 Free Download (v4.13.1m)
If you're just starting, you might also find tutorials on sites like Mission for Today or SAS 1946 that offer downloadable campaigns to keep your missions fresh. : Version 4
: Though it's possible to fly with a mouse and keyboard by mapping the mouse axes to joystick inputs, most "aces" in the community suggest using a dedicated joystick to truly feel the flight physics. Why Version 4.13.1m? Before adding anything, launch the game and check
Version is an official patch that players typically install after acquiring the base game. If you already own the game, here is a story-like guide on how to navigate the patching and modding process: The Pilot's Guide to Patching (v4.13.1m)