The Rise of the Systemic Game

When it rains in The Legend of Zelda: Breath of the Wild, almost everything changes. Rocks become slick, making climbing harder. Link's footsteps are hushed, making stealth easier. Electrical attacks become more dangerous, while fire and bomb arrows lose their special properties.

Certain plants and creatures appear only in the rain. Characters run for cover. Campfires go out. In some places, large puddles form and later evaporate when the sun returns.

The weather is not only visual decoration. It reaches into traversal, stealth, combat, ecology, NPC behavior, fire, electricity, and level state. That interconnection is what makes the game systemic.

A systemic game is built so one system can influence another. The player is not only moving through handcrafted scenes. They are operating inside a web of relationships where objects, characters, environments, and rules can push against each other.

Far Cry shows the idea in a blunt, entertaining form. The player can fight enemies. The player can fight wild animals. More importantly, enemies and animals can fight each other.

That is not a scripted scene every player sees in exactly the same way. It is an enemy system and a wildlife system interacting because the entities are aware of each other and have rules for what to do.

In simplified terms, every entity can have inputs and outputs. A tiger might listen for the player, bait, fire, and enemies. It also broadcasts its own presence into the world. When an input and output match, and the entities can see, hear, or touch each other, a connection is made.

Then a rule fires. The tiger attacks the guard. A flame touches a wooden arrow and sets it on fire. An exploding creature destroys a floor tile. Rain hits a campfire and snuffs it out. Systemic games work by giving many things in the world awareness of each other and consistent rules for interaction.

The first major benefit is planning. In many traditional games, enemies are mostly aware of the player and little else. That means the most direct interaction is often the only interaction: shoot, punch, or sneak past the enemy yourself.

In a systemic game, the player can reach enemies through relationships between systems. Release a caged animal and let it attack nearby guards. Lure hostile factions into each other. Use a weather system, physics object, fire source, or AI routine as part of the plan.

One memorable Watch Dogs 2 situation comes from being chased by police, leading them into gang territory, hiding on a rooftop, watching the factions fight each other, and using the distraction to escape. That feels smarter and more personal than simply shooting through the encounter.

That is a defining pleasure of systemic design: the player exploits the relationships between entities as part of a plan, and when the plan works, the player feels as if they understood the world rather than merely followed instructions.

The second major benefit is surprise. Systemic games can create moments of drama that were not authored as one-off sequences: a three-way fight between an army, a resistance group, and an angry elephant; a fire spreading farther than expected; a guard reacting to a noise caused by another system entirely.

These anecdotes are memorable because they often have a strong story shape. The player forms a plan, starts executing it, a chain reaction disrupts it, and then the player has to adapt.

They are also memorable because they belong to the player's specific experience. A giant scripted set piece can be spectacular, but every player may see it. A strange chain reaction created by the collision of systems feels like something that happened to you.

This is emergent gameplay: solutions and situations that were not directly authored as fixed events, but emerge from multiple systems meeting each other. Designers are still responsible for the possibility space. They set up the entities, rules, and conditions that make emergence possible.

To make this work, lots of entities need awareness. Characters can fight among themselves. Enemies can damage the environment. Entities can respond to the day-night cycle. Breath of the Wild adds a chemistry-like layer of wind, fire, ice, electricity, metal, water, and weather.

The more things that can sense and affect each other, the more room the player has to experiment. But the rules also need to be consistent. The player can only make good plans if they have a strong idea of how the world will react when pushed.

Consistency also needs to be universal. If some wooden objects catch fire, all comparable wooden objects should catch fire. When a rule appears to apply in one place but not another without a good reason, the world's believability is reduced, and the player becomes less likely to experiment later.

This is why systemic games often benefit from abstraction. Instead of making every object listen for every specific object, the game can use general stimuli such as fire damage, piercing damage, explosive damage, sound, electricity, heat, or water. Entities can then react to those broad signals.

That makes the system easier to extend and can create connections the designers did not explicitly plan. Deus Ex lets players exploit exploding enemies to break through doors. Breath of the Wild lets metal objects conduct electricity in shrine solutions that may feel like cheating, which is exactly part of the fun.

If surprising events should happen regularly, the world cannot sit in perfect equilibrium until the player arrives. It needs some instability of its own.

Automated systems can create that movement. Breath of the Wild's rolling weather can bring thunderstorms at awkward times. AI characters can have their own goals and needs, causing them to move around, react, and collide with other entities.

A systemic world does not need to be chaotic all the time. Too much randomness can make planning impossible. But it needs enough motion that the player feels they are entering a living situation, not a puzzle box that waits motionless for one correct input.

The sweet spot is a world where the player can understand the rules but cannot predict every consequence. Plans should be possible, and plans should sometimes go wrong in interesting ways.

Building interconnected systems is not enough. Many games fail to encourage players to use them.

Metal Gear Solid V offers many exciting opportunities, but a reliable silenced tranquilizer can solve so many problems that riskier plans may feel unnecessary. If one safe, direct tactic dominates, the systemic possibility space goes unused.

Hitman pushes players toward imagination by making Agent 47 weak in a straight firefight. Breath of the Wild controversially breaks weapons, partly to push players away from one favorite tool and toward improvisation. These choices can frustrate players, but they also serve a design purpose: they make creative solutions matter.

It also helps to give players tools that do more than remove entities. Killing an enemy usually reduces the number of active relationships in the space. Hacking a security system, changing allegiance, creating a decoy, starting a fire, moving an object, or redirecting attention can add or transform relationships instead.

Open-world games often contain excellent systems but then constrain the player inside linear missions. Grand Theft Auto has city behavior, traffic, police response, and wanted levels that make actions ripple through the world. The wanted system is especially strong because harming a civilian creates consequences that spread into police behavior and pursuit.

But many main missions in those games are tightly scripted, with fail states for not following commands exactly. Far Cry can run into the same problem. The open camps are often more fun than the story missions because they are testbeds for the systems rather than corridors of instructions.

Making levels for systemic games is less about prescribing the route and more about giving the player a goal, then caring much less about how they achieve it. Open spaces, multiple entities, overlapping awareness, and flexible objectives create room for plans and anecdotes.

The more a mission tells the player exactly where to go, what to do, what not to touch, and when they have failed for improvising, the less room the systems have to breathe.

Systemic design can also become generic. If every open-world camp uses similar guards, animals, alarms, hiding spots, and explosive barrels, the interactions may begin to feel interchangeable.

The systems should be tuned toward the experience the game wants to create. Far Cry 2 uses fire propagation and roaming enemies to produce peril, danger, and instability. Hitman goes in the opposite direction, focusing on a highly choreographed social machine where the player becomes the disruption.

Systems can even carry a message. Mafia III makes police respond to crime more slowly in Black neighborhoods than in white neighborhoods. That is not just setting detail. It is the game speaking through rules and response times.

The question is not simply whether a game has many interacting systems. The question is what those interactions make the player feel, understand, risk, and remember.

Systemic design is not new. Simulation games have long used interconnecting rules to mimic worlds, economies, ecologies, towns, bodies, colonies, and disasters from a godlike perspective. RimWorld and Dwarf Fortress are famous for absurd chains of cause and effect.

Dwarf Fortress can produce situations where cats die because dwarves spill alcohol on them, the cats lick themselves clean, and the alcohol poisons them. That is ridiculous, but it is also a perfect example of several small systems colliding.

The immersive sim took simulation-style interconnection and put it inside first-person games where the player controls one character. Thief, Deus Ex, Ultima Underworld, and System Shock all belong to that lineage, and later games such as Dishonored and Prey continued it.

What feels different now is that systemic design is spreading beyond that specific legacy. It appears in big-budget open-world games, unusual European RPGs, indie games made by immersive-sim fans, stealth games, action games, and even a modern Zelda adventure.

That rise is exciting because systemic design gives players room to make plans, watch those plans collide with the world, and adapt when everything goes wrong. The more games learn to build that kind of interconnection with purpose, the more memorable their worlds can become.