Kingdom Come: Deliverance will utilize a classless role-playing game system, allowing players to customize their skills to take on roles such as a warrior, bard, thief or something in between. Abilities and stats will grow depending on what the player does and says through branched dialogue trees. During conversations the time a player takes to make a decision is limited and will have an effect on their relationships with others. Reputation will be based on player choices and will carry consequences.
Character bodies and faces are created through the combination of multiple individual pieces with finishing touches. The clothing system currently features 16 item slots, and items on many areas of the body can be layered. One example given is a heavily armored knight, who may on his upper body wear a gambeson, followed by mail and plate armour, with a tabard or surcoat over top, for a total of four clothing items in the chest slots. Each clothing type will provide different levels of protection against different types of weapons. Clothing will also get progressively more worn, dirty, or bloody through use, affecting the character's appearance. Players will be able to use a variety of weapons including swords, knives, axes, hammers, bows or crossbows. Horses will feature heavily in the game, and are designed to act with their own AI while under the player's control, moving or jumping to avoid small obstacles or dangers. Players will be able to fight from horseback and use their steed to carry items if they need additional inventory space, but warhorses are also competent combatants with their own AI. Steeds level up on their own throughout the journey and come with five slots for armor and attachments.
The game will feature a needs system which will require the player to sleep or eat in order to stay healthy. Equipment and clothing will also degrade and require repair. Foodstuffs and other perishable items will spoil over time. The game will use skill/stat-based minigames for many of these tasks including weapon and armor repair, as well as the gathering or crafting of new items by fishing, mining, picking locks or pockets, cooking meals, distilling alcohol or creating medicines.
Kingdom Come: Deliverance will use a first-person view and feature both ranged and melee combat. Combat is based on a physics system using inverse kinematics to determine the reactions of both combatants based on the speed and weight of a blow. This system aims to add greater variety and realism to the combat, coupled with a variety of basic combat moves and combination moves, some of which will be unlocked by skill points. Different weapons will have different characteristics making them useful for different purposes. For example, a sword is a quick weapon for striking and parrying, but is not very effective against heavy armor.
Quests are intended to be open-ended, with multiple ways to complete objectives to allow multiple character types to be viable. The storyline will feature some large scale events such as castle sieges and large battles. The quests are played within the sandbox world. Every non-player character (NPC) has their daily routine, and every routine can be affected by the player. Characters are able to react to all player actions and adjust their routines to them. NPCs will report crimes to authorities, who will punish the player accordingly, either with a fine, time in jail, or by subjecting them to the stocks or torture. Crime will affect economics and people will get suspicious or aggressive after unresolved crimes