Explore by subject
13 sectors, each made of tracks that climb the eight levels, from what one person does on day one to what a nation does. Open a sector to see every track as a strip of levels, with what is written at each and what is not.
13 sectors · 44 tracks · 140 steps · 0 levels planned and not yet written. The bar on each card has one cell per level: filled where something is written, hatched where it is planned, blank where nothing is.
Water & Sanitation
- Find and store water
- Make water safe
- Sanitation
5 steps · 11 guides · 2 builds
Food & Agriculture
- Wild food
- Crops and soil
- Protected growing
- Livestock
- Aquaculture
- Storage and preservation
18 steps · 23 guides · 12 builds
Shelter & Architecture
- Emergency and temporary shelter
- Dwellings
- Storage and farm buildings
- Building materials
8 steps · 16 guides · 9 builds
Settlements & Planning
- Settlement and planning
7 steps · 6 guides · 1 build
Health & Medicine
- First aid and surgery
- Hygiene and disease
- Nutrition and teeth
- Mother and child
- Medicines
10 steps · 9 guides · 2 builds
Energy
- Fire and fuel
- Mechanical power
- Electricity
10 steps · 13 guides · 4 builds
Materials & Chemistry
- Fibres, textiles and leather
- Ceramics and glass
- Metals
- Binders
- Chemicals
19 steps · 20 guides · 12 builds
Tools & Industry
- Hand tools
- Woodworking
- Metalworking
- Production
5 steps · 7 guides · 7 builds
Transport
- On water
- On land
- In the air
16 steps · 6 guides · 10 builds
Knowledge & Education
- Records and writing
- Teaching
- Science and measurement
14 steps · 8 guides · 2 builds
Communication & Computing
- Signals
- Electronics and computing
6 steps · 6 guides · 0 builds
Economy & Trade
- Money, credit and capital
7 steps · 3 guides · 0 builds
Society, Law & Governance
- Deciding together
- Land and law
- Public works and administration
- Security
15 steps · 9 guides · 0 builds