Napoleonic Wars is a multiplayer-only DLC (expansion pack) developed by Flying Squirrel Entertainment for Mount & Blade: Warband, set during the last years of the Napoleonic Wars. It features historical battles from the Napoleonic era of up to 200 players with over 220 unique historical units, controllable artillery pieces, destructible environments and five selectable nations: France, Britain, Prussia, Austria, and Russia. It was released on April 19, 2012.
The multiplayer revolves around game modes such as team deathmatch, deathmatch, siege, capture the flag, duel, battle, and commander battle. There are also community events called line battles that pit the player organizations called regiments against one another in First-generation warfare. A major aspect of the DLC are the player created regiments that are based on regiments from the actual Napoleonic Wars. The popular regiments work together to create organized events, such as line-battles and sieges. Flying Squirrel Entertainment had help from the developers of the previous multiplayer mod "Mount and Musket", also set during the Napoleonic Wars. Since the release of the game it has been patched several times, adding more content to the game, such as sailors and marines as well as usable schooners and longboats.