About
Nigsim na city-building game wey dey run for your browser — Firefox, Chrome, Safari, anyone. E based on SimCity (1989), but di rules, di money and di problems na Nigerian own.
You dey play as di person wey must build am: zone di land, run di wire, lay di road, and keep di city working through dry season and rain. Population dey grow when people get light, work and road wey reach where dem dey go.
Money na Naira (₦). One ruleset. Two scales — national and city-state. Six mandates.
Start new city
Ruleset
Dis edition get one ruleset: di Nigeria ruleset. Di old Micropolis and Govern rulesets don comot — anything wey you load from an older save go migrate to di Nigeria rules by itself, and nothing for your city go spoil.
Wetin di Nigeria ruleset add on top di classic simulation:
- Money na Naira, and di numbers dey scaled for a Nigerian city budget.
- Rail dey link station to station. E no be replacement for road.
- Port must touch water. Goods station fit stand in for am when you no dey near di coast.
- Coal and gas power stations. No nuclear, so no meltdown.
- Wet season and dry season dey change how di city behave.
- A resource layer — water, food, medicine, fuel, materials.
- Malaria pressure wey rise for rainy season and fall when clinic and drainage dey.
- Road, rail and power line no dey burn.
- You no fit build or bulldoze while disaster dey happen.
- Instead of bank loan, you dey issue bond.
Choose your map
- Nigeria — national map. Di whole country. Six anchor cities, six mandates, from Lagos lagoon go reach di Niger Delta. Dis one na di long game.
- Lagos — city-state map. Lagos as e be for ground, from Badagry Creek reach Lekki: di Atlantic beach, Lagos Island and Victoria Island, di harbour mouth, Lagos Lagoon wey reach Ikorodu, and di Ogun river from di north. Plenty water, and di drainage problem dey your face from day one. Better place to learn di ruleset.
Di rivers, di coast and di lagoon na real geography, so dem dey di same place every
time. Trees and di small details come from di seed wey di map screen dey
show (“Seed 482913”). Di same seed go always make di same map. Press
New map for another one, or open govern.html?seed=482913
to play a map wey somebody share with you.
Name your city
Give di city name. Once you choose am, e dey stay — so pick something wey you go still like in fifty years.
Difficulty
| Difficulty | Funds | Maintenance | Disaster |
|---|---|---|---|
| Creative | ∞ | Cheap | None |
| Peaceful | ₦20m | Cheap | None |
| Novice | ₦20m | Cheap | Rare |
| Expert | ₦10m | Expensive | Rare |
| Master | ₦5m | Expensive | Frequent |
Mandates
Di national map dey run on six mandates, one for each anchor city. Each mandate get four requirements. Meet all four, claim di reward, and di next mandate go open. Di panel for di right side of di screen dey always show you wetin remain and wetin to do next.
| # | City | Mandate | Wetin dem dey ask for |
|---|---|---|---|
| 1 | Lagos South West | Make di lagoon liveable | Lagos dey grow faster than e dey drain. Zone homes and markets for di high ground,
wire dem well, and keep water comot from people parlour. Homes zoned · markets zoned · full grid coverage · pollution held down |
| 2 | Ibadan South West | Room for di next arrivals | Students and families dey land for di hillside every day. Keep homes powered and
connected so di residential growth fit produce school and clinic before overcrowding
set di pattern for di next fifty years. Population · schools · clinics · unemployment held down |
| 3 | Abuja North Central | A capital you fit cross | Di capital only work if people fit reach am. Lay di road and rail spine, then
make sure traffic no chop di gain. Road · rail · stations · traffic held down |
| 4 | Kaduna North West | Hold di rail corridor | Kaduna na di hinge between north and south. Keep di corridor safe and served,
otherwise di trade go just route around you. Rail · police · fire · crime held down |
| 5 | Kano North West | Power di market belt | Di dye pits and night markets don dey run on generator for a whole generation.
Give di north grid wey no dey blink, and industry wey get where to sell. Industry · power plants · full grid coverage · commerce |
| 6 | Port Harcourt South South | Give di delta room | Di delta dey pay for plenty of dis country. Build di port and di industry, but
leave di creeks enough green to survive am. Port or goods station · industry · woodland kept · pollution held down |
Nigeria friend challenge
Choose Challenge a friend to start from one Nigeria map seed with ₦20m and a fresh set of mandates. Share di invite link before you build so your friend fit play di same map.
After two simulation years, your result go show mandates cleared, population, trust and shortages. Share di result link; your friend fit play and compare. If dem send their result back on di same device, you go see who win before you play again. You fit save your city file and continue later. Di links carry player-submitted scores, so this one na friendly competition.
Load from file
You fit continue from any city wey you save before. Drop di file inside di dotted box, or click di box to pick am from your computer.
Options
Auto bulldoze
Clears rubble and trees by itself when you dey build on top dem. For anything 3x3 or bigger, e go clear power line too.
Popup window
When e dey ON, di game go open a window for:
- End-of-year budget
- City level up
- Gift buildings
- Disaster
When e dey OFF, di same news go show for di message bar at di bottom instead. For di amusement park / casino choice, di game go pick amusement park for you.
Sound effect
Turn sound effects on or off.
Colour barrier-free
Switches di maps to a palette wey you fit still read by brightness alone, no be by hue. Useful if colour dey hard to tell apart.
Buildings
Bridge cost double. For Expert and Master, maintenance cost is 1.5×.
Wetin you fit build
| Name | Cost | Upkeep | Size | Description |
|---|---|---|---|---|
| (Inspect) | - | - | - | Show information about whatever you point at. |
| Bulldoze | ₦1k | - | 1x1 | Clears 1x1 buildings, trees and rubble back to flat land. If you clear di centre of a big building (small above centre for 4x4 and 6x6) di whole thing go turn rubble. Bridges dey removed complete. ₦1k per tile. |
| Road | ₦10k | ₦-0.75k | 1x1 | Connects R, C and I zones to stadium, port, airport and station. Over water e becomes a bridge and cost double. |
| Railroad | ₦40k | ₦-1.25k | 1x1 | Links station to station. E no be substitute for road. Over water e becomes a bridge and cost double. |
| Power line | ₦2k | - | 1x1 | Carries current from di power station to your buildings. Di line itself dey
consume small power. Over water e cost double. |
| Tree | ₦20k | - | 1x1 | Raises land value around am, and soaks up some of di pollution wey industry dey produce. |
| Residential zone | ₦100k | - | 3x3 | Homes go grow here. Must connect to a commercial zone. |
| Commercial zone | ₦100k | - | 3x3 | Markets, shops and offices go grow here. Must connect to a residential zone. |
| Industrial zone | ₦100k | - | 3x3 | Workshops and factories go grow here. Must connect to a residential zone. |
| School | ₦600k | - | 3x3 | Educates di area around am. A powered residential zone wey get road access to commerce fit also grow one on im own, for free, once in a while — building one is di reliable way to get am. |
| Hospital | ₦800k | - | 3x3 | Cuts malaria pressure nearby. Same as school — residential zones fit also grow one on their own once in a while, but building one is di reliable way to get am. |
| Station | ₦300k | - | 3x3 | Eases traffic around am. Stations must be joined to each other by rail. |
| Police department | ₦500k | ₦-120k | 3x3 | Brings crime down for di area around am. |
| Fire department | ₦500k | ₦-120k | 3x3 | Cuts fire risk nearby and stops fire from spreading. |
| Sports stadium | ₦3m | - | 4x4 | Football and basketball variants both remove di cap on residential demand. Must connect to a residential area. |
| Port | ₦3m | - | 4x4 | Removes di cap on industrial demand, and dey import supplies. Must connect to industry, and must touch water. |
| Goods station | ₦3m | - | 4x4 | Same effect as a port, for cities wey no dey near di coast. Di rail must reach di edge of di map. |
| Airport | ₦10m | - | 6x6 | Removes di cap on commercial demand, and dey import supplies. Must connect to commerce. |
| Coal power station | ₦3m | - | 4x4 | 140MW. Cheap to build, but e dey pollute. |
| Gas power station | ₦6m | - | 4x4 | 100MW. Cost more, pollute less. |
| Farm | ₦800k | - | 3x3 | Adds food straight to di city resources, on top of wetin your commercial and industrial focus dey supply. |
| Water treatment plant | ₦1.2m | - | 3x3 | Adds water straight to di city resources, same way. |
| Library | ₦700k | - | 3x3 | Raises land value around am. Also comes as a free gift once you don build plenty schools. |
| Refinery | ₦2m | - | 3x3 | Turns materials into fuel — e no dey produce from nothing, e must chop from your materials stock first. Unlocks when your city reach State capital tier. |
Where direct facilities belong
When you select farm, water treatment plant, refinery, goods station, oil well or gold mine, di map go show a site survey. Di coloured diamonds na strong planning locations; move your cursor across di land and di survey card go score di exact tile. You fit use Sites on / Sites off to hide di diamonds, or Gold sites for di map controls to reveal surveyed deposits. For now facility score na advice: farm, water and refinery fit use any valid land; oil well and gold mine na the exception, dem require a surveyed deposit. Poor score no reduce output.
| Facility | Look for | Why |
|---|---|---|
| Farm | Surveyed fertile ground, especially near water | Farming na direct facility; no be R/C/I zone. |
| Water treatment plant | Dry land beside surface water | Di intake needs water, but di building itself needs solid ground. |
| Refinery | Freight corridor, water route, or regional oil access | Refinery no be oil deposit. Na industrial facility wey receives raw material and ships fuel. |
| Gold mine | Surveyed gold deposit only | Mine must follow geology. E be one direct, site-bound facility — never a zone. |
| Oil well | Surveyed oil field only | Well extracts crude for refineries; e no be an R/C/I zone. |
Di rule of thumb simple: zones na broad land use wey many private buildings fit grow inside; mine, well, farm and refinery na deliberate facilities wey you place one by one. Extraction (gold or oil) must follow a deposit. Processing (refinery) follows logistics; oil wells feed crude into refineries before the legacy materials fallback.
Nigeria city systems
Di Nigeria and Lagos maps add a resource layer on top di normal simulation. Five resources — water, food, medicine, fuel and materials — dey consumed every month, and dey supplied by di focus wey you pick for commerce and industry, plus any farm, water treatment plant, windmill or refinery you build directly. Oil wells add a separate crude commodity, and refineries consume crude first (then fall back to materials), so extraction and processing fit form a real chain. Port, goods station and airport dey bring in supplies from outside.
When stock run low, zones dey grow slow, trust dey drop, and your city score dey fall.
Malaria and di seasons
Di year get two seasons and dem no be decoration. For wet season, malaria pressure dey climb — and e dey climb faster when homes dey exposed, when clinics no dey, and when medicine stock don finish. Drainage and clinics dey push am back down. High malaria dey slow growth and cost you trust, same as any other shortage.
Di banner at di top of di screen go always tell you which season you dey and wetin you suppose don do before di rain reach.
Policies
Di Policies tab for di city panel na where you dey govern. Each policy na standing decision: enact am and e go hold every month until you repeal am. Each one dey cost money every month (e dey grow with di population), and e dey land different on different people.
- Fire-safety building code — every building fire risk drop by about a third. Construction go slow small; traders go complain about di cost.
- No building on di floodplain — no new zone within two tiles of water, so less of di city dey for di waterline and di drains no dey fill as fast.
- Monthly sanitation day — one morning a month di city stop to clear gutters (like Lagos environmental-sanitation Saturday). Less flood build-up, less malaria; di roads go empty for that morning, and traders and riders go lose di trade.
- Subsidised BRT & danfo fares — fewer cars for road, more buses. E dey cost pass all di others, and okada and keke riders go lose passengers.
- Free primary education — more children for school, faster research.
- Ban household generators — when light go, homes and shops no go run generator again: cleaner air, fewer fires. But where di grid no strong, shops go dark — fix di power first.
Each card dey show a forecast: di simulation own formulas run on your city, with di policy and without am (fires a decade, how full di drains go reach for one wet season, congested roads, school places, generators running). E go also show who go gain and who go lose, and one line from your adviser.
Residents
Five groups of residents — commuters, families & students, market traders, okada & keke riders, and elders — each get dem own approval. E dey follow how di city treat dem (traffic, schools, clinics, malaria, light, tax) plus di policies wey dey in force, and e dey move small small every month, no be one time. High approval dey help civic trust; low approval dey wear am down. If you repeal a policy within six months of enacting am, e go cost you 3 trust — people no like government wey dey change mind.
Commercial focus
| Focus | Wetin e dey supply |
|---|---|
| Local markets | Water and plenty food. Good early, good for feeding a city wey dey grow fast. |
| Trade logistics | Fuel and materials. Dis one dey feed construction and industry. |
| Offices and services | Medicine. Fewer goods, but e dey help you hold malaria down. |
Industrial focus
| Focus | Wetin e dey supply |
|---|---|
| Workshops | Materials. Di default, and di simplest to keep running. |
| Manufacturing | Heavier output, heavier pollution. |
| Agro-processing | Food. Pairs well with local markets. |
Dis two na policies for di buildings wey grow automatically from your zones. Dem no replace di gift buildings wey events dey unlock.
Gifts
Every gift na 3x3 and cost ₦100k.
| Name | Condition | Income/Upkeep | Description |
|---|---|---|---|
| Your house | Population 2,000 or more | - | Raises land value around am. Di graphic dey change as di city dey grow. |
| Bank | Population 10,000 or more Funds ₦3m or less | - | Lets you issue bonds. |
| Police HQ | Police dept. 6, 12, 18 | ₦-120k | Covers a wider area than a normal police station. |
| Fire HQ | Fire dept. 6, 12, 18 | ₦-120k | Covers a wider area than a normal fire station. |
| Amusement park | Roads 200, 300, 400 tiles Gifts 3, 6, 9 (land fill no count) | - | Raises land value around am. |
| Casino | ₦400k | Raises land value around am, but crime nearby go rise too. | |
| Terminal station | Railroad 300, 600 tiles | ₦300k | Works like a normal station, and raises land value around am. |
| Garden | Afforested 200, 400, 600 tiles | - | Raises land value around am. |
| Zoo | Football stadium and basketball stadium | ₦200k | Raises land value around am. |
| Universal Exposition | Population 10,000 or more Airport and port/goods station | ₦200k | Raises land value around am. |
| Library | Schools 3, 6, 9 | - | Raises land value around am. |
| Windmill | Developed land 200, 400 | - | Raises land value around am, and adds small fuel to di city resources. |
| Fountain | 50 years passed | - | Raises land value around am. |
| Tower | Population 100,000 or more | - | Raises land value around am. |
| 500,000 Monument | Population 500,000 or more | - | Raises land value around am. |
| Monolith | Population 700,000 or more | - | E no dey do anything. E just dey there. |
| Obelisk | Re-elected (scenario) | - | Raises land value around am. |
| Land fill | Open land 150, 100, 50, 30 tiles | - | Turns water into flat land. If di tile na land already, nothing go happen. |
Game speed
| Time stops, but you fit still build and bulldoze. | |
| 20 seconds per month. | |
| 2 seconds per month. You no fit pick dis one while disaster dey happen. |
Demand indicator (R C I)
Di higher di bar go up, di easier dat kind zone go develop. Di game dey work am out from di population share of each zone type four months back, plus your current tax rate.
R zone, C zone
Growth depends on demand and land value. Where land value dey at im lowest, di zone need demand of 25% or more to grow, and e go decline at 0% or below. Where land value dey highest, e go grow regardless of demand.
I zone
Growth depends on demand only. E dey grow at 0% or above, and decline at -12.5% or below.
How zones develop
| - | Level 1 | Level 2 | Level 3 | Level 4 | Level 5 | Top |
|---|---|---|---|---|---|---|
| R | 20x8 | 320 | 480 | 640 | 800 | 960x2 |
| C | 160 | 320 | 480 | 640 | 800 | 960x2 |
| I | 160 | 320 | 480 | 640 | - | - |
Wetin a zone need before e go grow
- Power must reach am.
- R zone must connect to a C zone.*
- C zone must connect to an R zone.*
- I zone must connect to an R zone.*
* Connected means within a certain distance by road, or joined through a station.
On top of dat, di Nigeria ruleset go slow growth when resources short or malaria high. If your zones dey powered and connected but still no dey grow, check di city systems panel before you start blaming di road.
File
Save to file
Writes di current state of di city to a file. Load am back later to continue.
Restart game
Throws away di current city and returns to di title screen.
Quit
See you soon. Safe journey.
Disasters
Nothing for dis city dey happen by chance. Fire and flood get cause, and di message wey announce dem go tell you di cause, so you fit fix am. Play di same save di same way and e go turn out di same way every time.
On Peaceful and Creative no disaster go start by itself — no fire, no flood. Na only wetin you call from di Disaster menu, or wetin a scenario write, go happen.
While a disaster dey happen you no fit bulldoze, and time go stop — except for fire, flood, tornado and monster, wey dey continue.
| Name | Wetin dey cause am | Description |
|---|---|---|
| Fire | Novice or above Fire risk wey don build up |
Every building get fire risk: packed houses and shops pass small buildings,
industry pass all; building wey need light but no get am dey run generator, and dat one
double di risk; dry season (December to March) raise am; fire station wey near and get
light and money cut am well well. Ordinary building wey fire station cover no add
anything. When di risk for di city add up reach one fire, di building wey risk pass
go catch. Master dey build risk four times faster. Fire dey jump to di next building only when enough of im side dey burn, and fire cover plus rain make am harder. Road, rail and power line no dey burn. |
| Flood | Novice or above Nigeria and Lagos maps Rain pass drainage |
Every wet month, di rain (di season, and how wet dat year be) dey add water
according to how much of di city sit for di waterline. Drainage dey reduce how much
water gather, and dry season dey dry am. When e full pass, flood go come for di part of
di coast wey building crowd di water pass. Di season banner dey show how full di drains
don full. Some years wet pass others — di same years for every game. Water dey spread and e dey shallow as e go; drainage make am shallow faster. Na only deep water dey spoil road, wire and building. |
| Tornado | Disaster menu or scenario only | E dey come with di month wind, pass through di centre of di city, and turn whatever e pass through into rubble. |
| Earthquake | Disaster menu or scenario only | E dey shake from di centre of di city outward. Building wey e hit go burn unless fire cover strong; if not, na rubble. |
| Shipwreck | Disaster menu or scenario only Working seaport |
Di ship hold im course and hit ground. Fire where di ship hit, and bridges break. |
| Plane crash | Disaster menu or scenario only Working airport |
Fires around di crash site. |
Trains and ships dey follow timetable wey dey rotate through di stations and ports every month, and flights dey change corridor month by month.
Budget
You fit open di budget from di menu any time, and di game go also show am at di end of di year. Money only move at year end.
Because di spending don already happen, changing di allocation at year end no go change dat year figures.
Taxes
Sets di tax rate. Whatever you set go apply from next month. Di figure shown na di end-of-year estimate.
Special income
Income from gift buildings. Di figure shown na di end-of-year estimate.
Traffic funds
How much you dey put into road and rail upkeep. Cut am and people no fit travel as far by road, and fewer people go use di rail. Applies from next month.
Police funds
How much you dey put into policing. Cut am and di police effect go weaken. Applies from next month.
Fire funds
How much you dey put into di fire service. Cut am and di fire effect go weaken. Applies from next month.
Bond
Wetin you owe on bonds wey you don issue. If you fail to pay, na game over.
Bonds
Di bigger di city, di lower di rate you go get. Di bigger di amount, di higher di interest.
Issue a ₦2m bond (5 years)
You pay back everything, interest included, at di end of di fifth year.
Issue a ₦3m bond (10 years)
You pay back everything at di end of di tenth year. Interest higher than di 5-year one.
Map views
| RCI zone | Shows residential, commercial and industrial zones. |
| Power grid | Shows wetin get light and wetin dey blackout. |
| Population density | Shows how tight people pack. |
| Population growth | Shows growth, totalled every two months. |
| Transportation | Shows roads, railroads and stations. |
| Traffic volume | Shows how heavy di road traffic dey. |
| Crime | Shows crime rate. E dey rise where plenty people dey and land value low. |
| Pollution | Shows pollution. E dey come from power stations, airports, developed industry and congested roads. |
| Land value | Shows land value. E dey rise near water and woodland, and fall where pollution and crime high. |
| Police coverage | Shows di police effect, spreading along roads from each station. |
| Fire coverage | Shows di fire service effect, spreading along roads from each station. |
| Disaster | Shows fire and flood areas. |
Graph
Shows di trend over di last 12 years.
Residential, commercial, industrial
Population of each zone type.
Pollution, crime
Total pollution and crime, weighted by population.
Land value
Average land value across di areas wey get buildings.
Evaluation
If population dey below 1,000, or you just load a save, di game go say "not yet counted". After dat e dey update every month.
Di game first works out a base score wey you no dey see directly. E start from 1000 and drop according to di percentage of each city problem.
Support rate
Support rate = 10 + base score × 0.08, held between 10% and 90%.
Problems
Each one na di calculated value per head of population.
| Crime | Total crime rate, weighted by population. |
|---|---|
| Pollution | Total pollution, weighted by population. Pollution where nobody dey live no count. |
| Traffic jam | Traffic volume per person. |
| Housing costs | Goes high when land value for R zones too high. |
| Taxes | Creeps up once di tax rate pass 5%. |
| Unemployment | Goes up when C and I population too small for di R population. |
Growth
Change compared to di end of last year.
GDP
Total land value weighted by population. Tax revenue dey follow am.
Assessed value
Total of wetin every building for di city cost to build. Trees, land fill and power lines no dey counted.
Score
Population × base score × 0.001.
Difficulty
Di difficulty you picked when you started.
Category
| 0 - 1,980 | Village |
| 2,000 - 9,980 | Town |
| 10,000 - 49,980 | City |
| 50,000 - 99,980 | Capital |
| 100,000 - 499,980 | Metropolis |
| 500,000 - | Megalopolis |
Statistics
R zone, C zone, I zone
How many of each zone dey, and di share of each.
Developed
How many zones actually get building on top (schools and clinics no counted).
Top
How many top-level blocks dey. When two neighbouring R or C zones both reach highest land value and Level 5 population, one more step of growth go join dem into a single top block.
Road, railroad, power line
0.05km per tile.
Max output, power required
Total generating capacity against total consumption. Every tile dey use 0.1MW, and di power stations demselves dey consume power too.
Land, water, open land, woods
0.0025km² per tile.
Terrain editor (terrain.html)
Lets you edit land, water and di rest by hand.
File
Save and load city files (.json).
You fit also import Micropolis save data, though di import no dey complete.
Generate terrain
Map size dey go from 40x40 up to 200x200, in five steps.
You fit auto-generate: all flat, river, coast, lake, island, or di real Lagos coast and lagoon.
Scenario
Set di conditions for gifts and for disasters.
Election
Set di election year and di conditions for winning.
Credits
Govern na city-building game based on di original SimCity (Classic) wey Will Wright write. See Micropolis.
Nigeria Edition dey add di Naira economy, di six mandates, di seasons, di resource and malaria systems, and di Lagos art direction on top di original Govern engine.