A Steam page for the game was created in late 2016; the following year, TaleWorlds began releasing weekly developer diaries detailing elements of the game. The fundamental gameplay premise is the same as previous entries in the series: the player builds up a party of soldiers and performs quests on an overhead campaign map, with battles being played out on battlefields that allow the player to personally engage in combat alongside their troops. The player may construct a variety of different siege engines and strategically position them before the battle begins in order to target certain sections of the enemy fortifications. On the overhead campaign map, the player can choose to bombard the walls, possibly creating breaches that can be used once the battle begins. The design of the defending castles and cities is intended to be biased in favor of the defenders; for example, murder holes are often located at key chokepoints, allowing the defenders to slaughter large numbers of the attackers before they can breach the gates. Bannerlord features numerous improvements to the relationships between characters. While conversing with a character, the player needs to fill up a progress bar by successfully pushing their arguments; if the bar is filled, the character will give in to the player. If the character does not give in to charm alone, the player can employ the game's bartering system to try to bribe the character; this system is also used for regular transactions between the player and merchants. If the player repeatedly fails to persuade the character, a deal may become impossible and the relationship between them may be negatively affected. If the player character dies, one of their children can inherit their soldiers and fiefs and become the new player character. Bannerlord, like Warband, has a multiplayer component that allows players to engage in combat with each other across a variety of maps and gamemodes. Each class has positive and negative elements that are influenced by the positive and negative elements of their faction in general.