Cities: Skylines II: Complete Guide

A practical city-building guide for Cities: Skylines II covering the opening build order, zoning and demand, budget, services, traffic, milestones and development points, and what the 2026 Iceflake patches (Summer Solstice, Autumn Breeze) and Expansion Pass 2 change.

Researched September 2026 — current as of Patch 1.6.2f1 "Autumn Breeze" (September 15, 2026) and the launch of Expansion Pass 2. Live games change; check the linked sources if something differs.

Quick Start

Roads, then power and water, then zones. Connect to the highway, lay a small grid, place power and water/sewage, then zone residential with some commercial and industrial.
Follow the demand bars. Zone what the demand panel asks for, in small batches. Over-zoning leaves empty buildings and wastes money.
Milestones unlock services. Healthcare, deathcare and garbage come first (Tiny Village). Education arrives at Small Village, and fire and police at Large Village.
Spend development points carefully. New services unlock only their basic buildings. Better buildings and upgrades come from the development trees.
Put sewage outlets downstream of water pumps. Polluted drinking water makes citizens sick.
Keep industry away from homes. Ground, air and noise pollution tank happiness and land value.
Watch the budget weekly. Taxes, service upkeep and loans are all on the Economy panel. A small positive balance early is fine.
Build hierarchy into traffic. Highways feed arterials, arterials feed collectors, collectors feed local streets. Don't let local streets connect straight to highways.
Save before big changes and keep backup saves, especially with mods after a patch.

What's New in 2026 (Iceflake Era)

Iceflake Studios took over development of Cities: Skylines II from Colossal Order in early 2026 (around January, per City Corner #9) and has shipped a series of named patches:

Patch	Date	Highlights
First Frost	Early 2026	Fixed "death waves", rebalanced bicycles, better night visibility, weather/fog updates, the Color Customization tool, UI updates, terraforming and tree placement improvements
Summer Solstice (1.6.0f1)	June 22, 2026	Citizens no longer always shop at the store with the most stock regardless of distance. Pathfinding ranges per trip type (no more cross-map trips). Office goods can be imported. U-turn cost fixes. Slightly lower commercial demand. Fixed buildings losing road access after leveling
Autumn Breeze (1.6.2f1)	September 15, 2026	Smarter garbage trucks (reserve capacity, skip tiny pickups), garbage has more effect on happiness, companies making the most-needed resources get priority for properties, residential demand fixed for very large cities, citizen spending based on income rather than wealth, better tree LODs, water flow fixes, a UI framework update (can break some mods)

Expansion Pass 2 (released September 15, 2026; Iceflake's first expansion pass) includes the upcoming Park Adventures expansion (city parks, zoos and other outdoor spaces) and gives you the Downtown Market instant unlock right away: shipping-container architecture, food trucks and a new Scottish-inspired map, Emerald Estuary.

Opening Build Order

Pick a map with flat buildable land near the highway and fresh water upstream.
Lay a small road grid off the highway interchange. Use medium roads for the spine and small roads for zoning.
Power: a small plant (or wind/solar where the map suits it) away from where homes will go.
Water and sewage: a water pump upstream and a sewage outlet downstream. Connect pipes along your roads.
Zone: mostly low-density residential, a strip of commercial along the busier road, and industry downwind, away from homes and water.
Let the city grow to the first milestone, then add healthcare, deathcare and garbage as they unlock.
At Small Village: add an elementary school. At Large Village: fire and police stations.
At Grand Village: buses and parks. Start public transport early. It's much easier to plan before traffic jams set in.

Milestones and Rewards

There are 20 milestones, from Tiny Village up to Megalopolis. You earn XP from population growth and from placing buildings and services. Each milestone gives cash, development points, expansion permits (to buy map tiles) and a higher loan limit.

Milestone	Cash reward	Dev points	Map tile permits	Loan limit	Key unlocks
Tiny Village	₡25,000	+1	+3	₡100,000	Healthcare and deathcare, garbage, taxation
Small Village	₡50,000	+2	+4	₡150,000	Education, production panel
Large Village	₡75,000	+3	+5	₡200,000	Fire & Rescue, Police
Grand Village	₡100,000	+4	+6	₡250,000	Transportation, Parks & Recreation
Tiny Town	₡125,000	+5	+7	₡400,000	Communications
Boom Town	₡150,000	+6	+8	₡500,000	Pollution policies
Busy Town	₡175,000	+7	+9	₡600,000	Gated Community policy
Big Town	₡200,000	+8	+10	₡700,000	High-density housing

Figures are from the Paradox CS2 wiki; the later milestones continue up to Megalopolis.

Development tree costs: Tier 1 nodes cost 1 point, Tier 2 cost 2, Tier 3 cost 4 and Tier 4 cost 8. Points arrive slowly early on (10 in total by Grand Village), so the real question is what to unlock first.

Good early development picks:

Better garbage and healthcare upgrades once the basics are overloaded.
Education upgrades before you zone lots of offices and high-tech industry (they need educated workers).
Public transport nodes (tram/subway/train) as soon as traffic starts to bite.

Zoning and Demand

Zone	Notes
Residential (low, row, medium, high, low-rent, mixed)	Low density suits early villages. High-density housing unlocks at the Big Town milestone, and higher densities need services, education and transit
Commercial (low, high)	Needs customers (residents and tourists) and goods from industry or imports
Industrial	Manufacturing and warehouses. Pollutes. Needs trucks and rail/port access to scale
Office	Clean jobs for educated citizens
Specialized industry	Farms, forestry, ore and oil extraction on resource-rich land (paint an area)

Reading demand:

Hover over each demand bar to see the factors. Low residential demand might mean unemployment, too many empty homes or high taxes.
After Autumn Breeze, empty-home effects on residential demand take city size into account, which fixes stalled growth in very large cities.
Commercial demand was lowered slightly in Summer Solstice. Don't over-zone shops.

Budget and Economy

Taxes: tune each zone separately. Moderate taxes are fine. Very high taxes hurt demand and happiness.
Service fees (electricity, water) bring income but affect happiness.
Loans: fine for an early expansion push, but the interest adds up. Pay back once your balance is healthy.
Imports/exports: outside connections (highway, rail, ship, air) let you trade resources. Since Summer Solstice, office goods can be bought from outside connections too.
Upkeep grows with every building. Only place service buildings where coverage is actually needed.

Services Checklist

Service	Why it matters	Tip
Electricity	Everything needs it	Keep 20–30% spare capacity
Water & Sewage	Health	Pumps upstream, outlets downstream, and upgrade to treatment later
Garbage	Health, happiness	Autumn Breeze made trucks smarter and garbage count more toward happiness. Build enough processing capacity
Healthcare & Deathcare	Sickness and deaths	Clinics early, then hospitals. Cemeteries and crematoriums for deathcare
Education	Better jobs, offices	Elementary to high school to college/university
Fire & Rescue	Stops fires spreading	Cover dense areas and industry
Police & Administration	Crime	Cover commercial areas
Transportation	Traffic, access	Buses first, then trams, subway and trains
Parks & Recreation	Happiness, land value	Small parks between residential blocks
Communications	Post and telecom	Mail and internet coverage

Traffic Fundamentals

Road hierarchy: keep highway on-ramps away from dense intersections. Feed traffic onto arterials first.
Fewer, better intersections: long straight roads with spaced intersections flow better than tight grids on main routes.
Roundabouts handle medium traffic well. Use grade separation for heavy flows.
Lane usage: Summer Solstice fixed U-turn costs so vehicles use dedicated lanes more sensibly. Check your older interchanges.
Public transport and cargo: give industry direct access to highways and cargo rail so trucks don't drive through downtown.
Pedestrians and bikes: paths and bike routes take short trips off the road.

Common Mistakes to Avoid

Over-zoning. Empty buildings drag demand and income down.
Sewage upstream of your pumps. Instant sickness wave.
Industry next to homes. Pollution ruins happiness and land value.
Spending all development points in one tree early. Unlock what's overloaded right now.
Ignoring garbage. After Autumn Breeze it hits happiness harder.
Connecting local streets straight to highways. It creates gridlock and makes every citizen's commute worse.
Keeping incompatible mods enabled after a patch. Autumn Breeze updated the UI framework, and some mods may break.

Advanced Tips

Districts and policies: paint districts to set local policies and taxes.
Land value: parks, services and transit raise land value, which lets buildings level up. Watch the land value info view.
Specialized industry chains: match extractors (farms, forestry, ore, oil) to local manufacturers to cut down on truck traffic and imports.
Plan transit corridors early. Leave room for tram or subway lines along your main arterials.
Use info views (traffic, pollution, services, land value) all the time. They're the fastest way to diagnose problems.
Mods: Paradox Mods is the official mod platform. Iceflake is expanding the Asset Editor, including a -startEditor launch parameter that opens it directly.
Performance: big cities are CPU-heavy. Lower visual effects such as depth of field and volumetrics in graphics settings if your frame rate drops, and save a new game rather than overwriting.

FAQ

What's the latest Cities: Skylines II patch? 1.6.2f1 "Autumn Breeze," released September 15, 2026.

Who develops Cities: Skylines II now? Iceflake Studios took over development in early 2026, publishing with Paradox Interactive.

What's in Expansion Pass 2? The Park Adventures expansion (coming in the following months) plus an instant unlock: Downtown Market with the Emerald Estuary map.

Why is my residential demand zero? Check unemployment, empty homes, taxes and services. The Autumn Breeze fix also helps very large cities.

Do old saves still work after Autumn Breeze? Yes, loading old saves is supported. Some mods may break because of the UI framework update.

How do I unlock more map tiles? Milestones give expansion permits. Spend them on map tiles in the map tile view.

What unlocks at each early milestone? Tiny Village: healthcare, deathcare and garbage. Small Village: education. Large Village: fire and police. Grand Village: transportation and parks.